> I wonder how things like ASP .NET will run with Native AOT in the future.

Let me give an example of an ASP.NET app lifecycle: an instance is launched, goes through startup code once. When it reports itself healthy, it is put into the Load balancer and then starts handling requests. Code in these paths is executed anywhere from occasionally to 1000s of times per second. After around 24 hours of this, it is shut down and restarted automatically.

So, compiler micro-optimising startup code to take ms off of it, is not interesting at all - it's only run once a day. Startup can take whole seconds, it makes little difference, the instance is ready when it's done. AOT in general isn't that important, but automatic tiered compilation based on usage data is very nice.