So as an escrow company I should also fund the creation of bogus patents to increase the rates of my business model

This makes no sense, because the only reason a higher proportion of bogus patents would increase the interest rate charged is because it would increase the risk that the patent returns very little in revenue (the higher interest rates aren't increasing profit, they're covering higher risk).

I think what'd you'd actually see is specialist patent funding actuaries and patent evaluators making an interest rate bid dependent on the actual patent and inventor in question, much the way insurance industry works. The direct competition would be business loans, and maybe that'd be essentially what they were - secured business loans.