Not really, the hardest part for most growing startups is scaling teams, not hosting.
I work on my startups alone. Hosting isn't the hardest thing for me.
But managing costs, and keeping them low needs time and research.
Like AWS has high price and Hetzner is cheap. So, migrating to cheap platforms, is that hard?
No, but why are you asking?
I am planning to start a service to manage startup hosting.
I think that would help people a lot!