Is it Profitable to run a GMOD Server?

Yes, it for sure is but it all depends on the server and who is running it, if the staff team is good and server is nice and clean and if you have donator ranks such as VIP VIP+ MVP etc.. Then it will be very profitable for sure. Lots of people think that to get a lot of profit you need to have the most addons and the most expensive cool looking addons and stuff but that is not true there are/were many server which are/were very popular meaning they got lots of money from it for sure. Also as many people say dont think of it as a job because it is not a steady income all the time.. Think of it as extra money.