There’s also the question of resale value. It would be hard to sell a LHD Tesla, if you buy that then you are essentially tied to it for the lifetime of the car, or taking a massive haircut if you ever decide to sell.
It’s not just the ticket machines, the UK also has a lot of narrow country roads that are difficult enough to drive in a RHD, I cannot imagine driving a LHD in UK it would be hell on earth.