That’s prolly some good advice.
I don’t want to get too technical here but building a professional studio is a good way to go broke fast, so heres a few things to consider before deciding to open up a studio.
First off I'm assuming by "professional" you’re willing to drop at least $10,000+ on your setup, including recording equipment sound proofing, etc... Now do you have the cash up front? Do you at least own some equipment already? Or are you gonna have to take out loans to pay for this ****?
Are you gonna try to do this out of your basement? Which isn’t very professional unless you’ve got quite the buzz going and people consider your studio more of a private/exclusive place to be. If not your gonna have to rent out a space, and that could cost up the ass. And keep in mind that it could take a couple years before you even start recouping initial costs or start turning a profit; and don't forget your rent/mortgage, utilities and possible interest on loans you may have.
Now do you even have clients? You can't just open up a studio and BAM, insta bookings. Unless you’ve got a lot of people bugging you to record stuff in whatever setup you may already have your going to have a rough start.
And lastly do you have the knowledge and experience necessary to run a studio as a somewhat certified professional? If you haven’t even worked in a professional studio before and/or fully understand the business/technical aspects of it I would completely forget about this idea for now, hell I would probably be looking into working at a studio at that point.
So in the end, if you have the capital, you have the clients, you have the ambition, necessary skills/education and some innovative ideas then you can defiantly go for it; but your gonna have to work your ass off to get anywhere with it.
IMO.