But I get what you're saying --you're saying, get funds together by any means necessary (SBA is a straightforward path) and bootstrap/found a company.
It's still certainly possible to start up a software business. Basically the business needs to provide enough value to customers that they'll pay for it, and what they pay needs to cover the costs of the business.
That is profitability (which is something even many large VC-backed tech companies have totally forgotten how to do).
Software businesses can be started with low costs...
I'll probably get the same pessimistic replies, but this is definitely a valid path for the brave and competent.