> I'm asking because i wouldn't know how to setup a mono repository at my 50 people Startup even if we deemed this to be necessary.

Sorry if this is a really dumb question. If you only have 50 people I'm assuming your codebase isn't that big, so why can't you just make a repo, make a folder for each of your existing repos, and put the code for those existing repos into the new repo?

I imagine there's a way to do it so that your history remains intact as well.