Theoretically, but there are a few issues:

* You're defrauding a fraud management service, which will catch on pretty soon when zero risk transactions get flagged by you as fraud, and close the account for abuse.

* Doing what you asked is illegal in several ways, and tied to your real identity -- MinFraud costs money, and being a fraud management service, paying with a prepaid debit card, connecting over a proxy, and verifying your account with a SIP phone will all be detected and flagged -- getting an account not traceable to you is quite hard.

Not if you can't tell the needle from the haystack. A "legit" company can mask data in many ways. The issue is the broad-brush-stroke generalizations. Some people find them pretty offensive.

This is the same Sh!t banks use to deny poor, black people credit and healt companies use to deny sick people coverage.

The people running these biz ideas fighting alledged XYZ (~corruption) do so out of the motive/incentive of there own personal greed and self interest, not the public good.

Don't kid yourself.

Surely by flagging them yourself, you wouldn't be accepting their transactions and so first and foremost hurting your own business?

Of course, that's true only if Utility(profit) > Utility(enemy's pain).

I wonder if services like these count as consumer credit services (and hence are governed by all sorts of fairness laws)