Eh, kinda. It's comparatively easy to set up an instance, as in "renting a VPS, figuring out how to use docker, installing docker, installing and configuring a reverse proxy, getting an SSL certificate, getting a domain, linking it all together, figuring out docker compose, and finally getting the instance connected to the open web".

But the upkeep of an instance is a whole other story. Constantly keeping an eye on user numbers, server and client performance, storage usage, needing to scale the machine up with a growing userbase while also managing the cost and somehow finding the cash to run it, plus the dread of being responsible for the data of users on that instance, requires a strong mind and a lot of time.

While the technicalities are somewhat "easy", expecting anyone to spin up an instance and manage the influx of hundreds to thousands of users in a short time seems unrealistic.