> I very much doubt it. This just comes across as you vastly over-estimating how hard it is to run a server.
What about security updates? Log alerts? Rollbacks? Monitoring? Support for multiple servers? Load balancers? Automated deployments from Git? Atomic web code updates? Ability to destroy and recreate the server from scratch? Setting up a similar staging site with the same versions of everything? None of this is trivial to automate reliably yourself.
I'm not saying it hard to get it working, but it's hard to make it work reliably and scale well. Comparing Heroku to e.g. manually setting up a Digital Ocean instance that you rsync the code across to is missing out on a huge number of details.