There's room for more than one car company like this. If Apple brings high quality, tight fit and finish, elegant design, software focus, vertical integration (including their new M1 processor tech), logistics support (charging station network, maintenance, etc), and "next-level batteries" to the mix, then I'm sure they'll find space in the market.
If Apple can execute with electric cars as they've executed with consumer electronics, then they'll be competing not just with Tesla, but directly with Audi, BMW, Mercedes, Lexus, etc.