For all the "others" then, this seems like a real life math "story problem."
Business A nets $5,000 a month. Business A could increase net profits to $7,200 a month by expanding its operation. The necessary expansion will cost $17,500. The owner of Business A, who is unable to secure a traditional loan, approaches a local "investor" who is willing to loan him the $17,500 provided the owner pays back $1,000 a month for the next two years (an annual percentage rate on the loan of 32.38 percent!). Should the owner accept the loan?
If the owner doesn't accept it, his cumulative net profit two years from now will be $120,000.
($5,000 x 24 months = $120,000)
If the owner does accept it, his cumulative net profit two years from now will be $131,300.
($7,000 x 24 months = $172,800, less $17,500 spent on the expansion, less $24,000 in payments to the "investor")
So even while paying outrageous interest, the owner would achieve 5 percent annual growth. Over a five year period, the business would net $390,500 with the loan, compared to $300,000 without it. (I obviously didn't calculate the tax consequences of the loan interest or the additional profit).
I don't think a business owner who has few other options can automatically dismiss a high interest loan just because it's a high interest loan. If you KNOW that an influx of cash will produce a tangible business return, then this is one of those cases where, "do the math" really is the right answer!