The interior is cheap. Even my 10 year old BMW 1 series interior feels better and is much sturdier.
Tesla is not a luxury car company. You pay a premium for the electric part, and put up with everything else.
They took a risk that nobody else was willing to make and proved a market. We're in a better place, ecologically speaking because of them. Their cars are also cheaply made. Now that manufacturers that know what they're doing are competing, Tesla is in trouble.
Aside from possibly BYD, other manufacturers have no particular cost advantage over Tesla in BEVs. Ford and GM are still losing money on each one they sell, and have cut production for next year.
The 2013 BMW 1 Series had a starting price of $35k. A Tesla model 3 starts at $40k in today’s dollars. Seems pretty even.