In theory it sounds like the obvious solution.
In practice, these footprints & fingerprints from virtualized phones are easily identified which get you derezzed.
IMO all that beer money stuff is fine for some people. Like grabbing coins from a fountain. It's small time. You will never get rich off it. Considering the specialized knowledge & investment of phones, I don't see why most don't set their sights higher.
If you were to have such a set up, a more lucrative business would be selling google play store reviews. There's agencies selling them for $1 each. Sell 100 reviews, get $100. However it requires a lot more effort than beer money: creating a website, integrating payment processor, marketing to your target demographic. Not as menial, but you're basically starting your own business at this point.