The bigger/biggest studios probably won't notice, but just about everyone else (including many of us here) will lose business as these types of solutions get more refined and the quality of their products improve.
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While me or you may never have a use for it, someone doing rough mixes at home on a budget and without the ear, tools, studio monitors, etc could certainly find the results acceptable enough.
I never expected things to go any different the minute studios became nothing more than very affordable, virtual environments.
With the huge explosion of home rec, and when everything's been reduced to a plugin...it wasn't going to take long for this sort of thing to happen. Cheap, convenient and fast....love it or hate it, that's where the majority of home rec has gone.
I mean...did anyone expect that of the millions of guys who suddenly felt they had a "studio", a good number wouldn't at some point want to open said studio for business...?...but, the same technology that made that possible, is now going to possibly take it away.
Personally...that doesn't really bother me or have any effect on me. I think that will only act as a filter to separate out part-time dabblers from the more involved musicians doing it regularly, and for the latter, a more proper mixing/mastering solution will always be the better/bigger draw...which is why the real mixing/mastering studios will not be put out of business.
This cheap online auto stuff will only clear out the virtual studio biz crowd...but again, you can't complain...because the technology that allows you to have a virtual studio biz is also why this is happening.
So...the solution is to have something more to offer than just being another guy with some plugs offering to apply said plugs to music.
I think in many ways (and something the home rec'rs don't often see) is that people will be drawn more toward what they don't have and what they are not able to do in their own homes. You have to provide more than what the average guy can now do himself.
Not that I'm planning on going into business with it...but that's why I've held onto, and still continue to use and evolve the physical/hardware side of my studio. I mean, it's
because I've always thought about the business possibilities that's made me want to maintain and upgrade the hardware gear side of my studio.
Plugs and apps...everyone has those now days...and sure, you can try and sell the quality of your "product" and base your marketing on that alone...but it would have to be that much better than anyone else can do, or that this new online stuff can do.
Having another angle, something you can offer that others can't...that might keep you in the game over this online auto-mastering stuff.