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VPS, Shared, Dedicated server hosting - it is all standard themes. Does anyone have in mind some non-standard thing which can be processed by hosting industry as a service to offer? Donno, SQLite3 hosting as an example.
I do believe their is a gap in the market for Stash hosting, to allow individuals to create their very own PornHub style experience. Such merry masturbatory times would be enjoyed!
Are you looking for: AWS?
These standard themes are most economical to implement and maintain for years.
Everything cost much higher and requires professional investement both in learning and implementing.
Push-ups as a service.
This is the server software: https://github.com/yoursunny/NDNts-video-server
I think there will be a big market for easy deployment and hosting of non-PHP web apps (Angular, React, Django, etc.) with functions similar to Laravel Forge, Envoyer, and Vapor.