Hey jruohonen, great point. it depends on what does "survive" mean.
Monetize-able GPTs? Not many for sure. What will happen IMO is established companies will build official GPTs to better serve existing customers.
GPTs for personal use? Many GPTs will be abandoned and not be used by anyone. That's okay for one-off use cases.
There will be a loooooong tail of GPTs that people would use from time to time. There will be a lot of diversity but the top GPTs will eventually be like the top apps in the app store IMO.