There is a reason. It’s just not a good one. It’s profit.

I don’t believe Tesla ever intended on having full self driving. That’s just an idea Musk sold people to boost confidence in the company. The promise sold vehicles and boosted stock value, making Musk a shit load of money.

What difference would it make if they were fully devoted to FSD with the best technology they could get? It still wouldn’t work perfectly and wouldn’t be allowed alone everywhere probably, and they would have made less profit during that period. In what time frame would it actually pay back?