If this can help, years ago I had the chance to open a studio with my band mate also rehearsal rooms, music school...
I didn't, cause I was afraid of many things, it was like 800 metre square venue rent, works, bank credits and that kind of shit.
My mate did himself and now it is his way of living... but specially rehearsing rooms, cause studio is the fucking hell... he coulnd't make a living of it.
I like to go there to rehearse, record my band's albums, reamping, checking new mics, amps... and I love my home studio too, it is my passion and my hobby. and it is very funny. But recording other's bands is something I couldn't do. My friend hates it too and usually he pays a guy to do the dirty job.
I don't regret of what I did, now I'm 35 and have a job that I hate but economically very safe, live in a good house with my wife and about to be father, haven't got money issues.
That was my choice and my experience, I hope it helps.