It's a lesson learned time and time again. The big companies have trouble with innovation because of their large bureaucracy, and the little new guys have trouble with getting things off the ground because they lack resources.
Tesla was one of the few that became a successful break-out company, but it seems to have squandered it's golden opportunity. Tesla used to be eons ahead of all the others. It could have been so much further ahead than the legacy auto companies, but instead now it's falling behind, and I'm not sure they can get back ahead.
Even if they could, regardless of one's opinion of Mr. Musk or his politics, he has arguably tanked his company's prospects more than any other CEO in recent history. I think Tesla is not headed anywhere good, unless the conservatives Mr. Musk is trying to appeal to (at least politically) start buying Teslas en masse.