Tesla is about to get its first real competition so it’s hard to know how it will do. I believe they have some great engineers. If Musk ignores Tesla, the management could be pretty good, too.
Breaking into the auto market is TOUGH, but new players aren’t stuck with legacy technologies so a newcomer could potentially leapfrog past Tesla. And some seem to have the tech and engineering to do so.
We will just need to wait and see. The future is developing; it’s not predetermined.