What in the service sector with the use of IT is rented out. Especially single entrepreneurs?

Question

Business Informatics

There is ozone that sells books (easier to
store and create). providers rent out small fiber channels.. There are renderers and crypto data centers for rent.. Databases like Wikipedia.. Mobile towers .. OS ...and other software.. And what is successful (from 10,000 rubles / month, 5- 10 years in a row) rented out by solo entrepreneurs (not trained as an astronaut)? (for example, your data center in the garage...) Is it really possible to set up servers in the garage and work from home on the darknet for cue ball? (without special contact with customers and within the law)

Answer 1

And what successfully (from 10,000 rubles / month, 5-10 years in a row) is rented out by single entrepreneurs (who do not have training as an astronaut)? (for example, your data center in the garage...)

Well, for example, payment systems.
We personally develop, but our partners, to whom we link our payment system, simply bought a ready-made payment system (software) and earn money by allowing payments to be made through it.