I work in the securities business. We once had someone send in a suspected altered document. Their state AG was notified, the U.S. Treasury and Homeland Security were notified, the SEC and FINRA were notified, and then we got some questions from Interpol, in Europe, and the UK's financial crimes investigator (through federal law enforcement). Fraudulently opening a securities account rings red-hot alarm bells because the automatic suspicion is nobody would be that brazenly stupid unless their expected pay-off was huge, i.e. terrorism or large-scale money laundering.
Do you let customers open up an account without a social security number and a screenshot as proof of identity and KYC? You are uninformed about this industry.
If the crux of your plan is, "We're going to lie to the federal government about what we're doing, and hope that we're small enough that no one notices," you've got a pretty big flaw in your plan.
They aren't going to go after retail investors.