BMW (and any other carmaker) won't go after Tesla seriously until the major markets around the globe are ripe & ready. They still aren't. The market has to be sustainable & working WITHOUT the government subsidies & credits. Otherwise it's too risky. Customers are not ready to pay premiums for BEVs - they only go after them when subsidies & credits are available, to make cars affordable for mass markets. Niche top-end markets are not as problematic. But the point of BEVs is to be mass-available.
But eventually everybody is getting there. The markets are ripening. The supply chains are being established and growing to keep up with demand (it can't be done overnight though! It takes time to establish & open a mine, a smelting facility etc). NOBODY - even Tesla - has established a long-term supply chain for batteries / battery cell rare earths materials. Establishing a supply chain for a model generation (6-10 years) is not enough and it's too risky. Expect mass production of BEVs when supply chains will be properly established.
Mind the annual production of passenger automobiles is around 70 million units. Add 20 million commercial vehicles per year and you get 90 million automobiles per year! That's a lot of batteries, lot of electricity, lot of charging stations, lot of a lot of metals, lot of rare earths ...
Everybody expecting an "overnight" change (talking about years here) is naive, ignorant & lacking any proper insight on the industry. Comparing automotive industry to consumer electronics (incl computers, TVs, mobile phones, Hi-Fi systems, cameras etc) industry is totally off. Apples and oranges. Automotive industry is much more rigid, much more complex, with very complex supply chains etc. And long R&D and life cycle. While consumer electronics gets new generation practically every year.
Taking Tesla - which is still a start up company from business point of view - as an example what all the other carmakers should have done (and in such short time) is not right. Legacy carmakers have their plans & paths, and will get there. Slowly. What can disrupt them more than one start up company is a brigade of start-up companies pushing up BEV supply. But that's not happening (perhaps a bit in China but even there the BEV start-up-mania is cooling down). What's more disruptive are the strict emission regulations (incl emission-free urban zones), and political pledges to carbon-neutral societies by 20xx - incl. banning registration / sales of new ICE-only passenger vehicles by 20xx.
Therefore legacy carmakers are speeding up, and a bidding war for long-term supplies have begun among legacy carmakers. Therefore all the collaborations lately. To speed up things - especially on the purchasing & production sides. And when purchasing & production are aligned, then R&D (technical solutions) has to be too.
BMW are much more worried what VAG, Daimler, Toyota, GM, Ford, Renault-Nissan, FCA, PSA are doing than what Tesla is doing. And what governments / legislators are doing around the globe.
Sure Tesla is a pioneer. With superb BEV products. Taking advantage of emerging BEV markets. But ripe BEV markets will be completely different animal. Many will catch up very quickly. And the cards will be shuffled, tables turned. I'm not saying Tesla will evaporate but it will have much harder time than today. They better consolidate their finances asap. As said many times: Tesla only has 1 car generation of advantage left. They'll have to innovate further to keep that advantage. And introduce new tech, solutions, services & content first. I hope they make it.It would be good for the consumers.
Mind BEV will only be a vessel for other stuff in the very near future - most probably bundled into 360 Deg products (all the tech incl Level x AD, all the services incl mobile internet, banking, car sharing, shopping etc etc, all the content incl business, entertainment, news, AI assistants, smart things etc etc). And nobody really knows how will that affect 100 million units automobile making industry. New 360 Deg product packages will have to be created & sold, leased etc. There will be lots of interindustry collaborations, even mergers & acquisitions. We will be witnessing a rise of corporate conglomerate chimeras around the globe. With trillions USD of revenues per year. A brave new (corporate) world. And when big corporations are too big to fail then governments & politicians are locked into catering to those corporations. Corporatism will finally prevail. I hope not in any of non-liberal authoritarian form. But I guess that's just a wishful thinking.
The biggest danger is the fact that all those corporations will have nothing but good intentions. But as we all know a path to hell is usually paved by good intentions, isn't it? Now I'm starting to feel depressed (and oppressed), LOL.