Aren't stock brokers forced NOT to include the basis right now? Fidelity reports the basis in a supplement section in the same damn document. Moving them toget

Aren't stock brokers forced NOT to include the basis right now? Fidelity reports the basis in a supplement section in the same damn document. Moving them together would be trivial, but I've been told the law is forcing them to do it this way (they didn't tell me that, I just read that somewhere. Not sure if it's true). As someone said, almost no one has investments. If you remove 401k, it's a tiny fraction of people. If the only thing I'd have to do to file my taxes would be going online, finding the list of my sales and needing to add the cost basis then click submit, it would still be a huge improvement compared to what we have now. Still, it's a problem that's pretty easily solved.