https://electrek.co/2022/03/24/tesla-spends-most-rd-least-ad...
Also, typically in any company revenue and PNL is attributed to the feature accumulating it and investment follows. It seems like a fairly rational bet.
According to statista.com:
2018 6.6%
2019 5.5%
2020 5%
2021 5%
This should give you an idea about your odds.