Here's how it'd go:
1. Dude gets loan, which bank will gladly give out because it's a certainty that RM will pay enough to cover the interest
2. Dude sets up shop
3. RM buys shop for a sum large enough to cover loan interest plus substantial profit to dude (because why accept the offer otherwise?)
4. Dude laughs all the way to the bank
Lather, rinse, repeat. Your hypothetical scenario fails. 
That isn't how driving somebody out of business works... Starbucks doesn't eliminate their competition by going around purchasing other coffee shops.
Flare's town example probably isn't good though, as a small group of people is easier to organize towards a cause such as buying from a local butcher to ensure long-term meat supply. Even if Murdoch brings in his propaganda arm it's pretty much impossible to hide the negative effect his business was having on the locals because it's out in the open.