Yep and these are well known because they existed for a long time before the media monopoly.
There are newer tools which we never hear about. Once in a while I come across some website of curated indie SaaS solutions and it's unbelievable what exists. Yet this massive ecosystem is probably just one bubble out of hundreds.
You only hear about the tools which received VC funding. It is VC-funding first, then traction, not the other way around as they try to portray it. You can always connect the founders socially to insiders prior to their launching and raising funding. Some failed multiple ventures yet keep receiving funding... but among those which succeed, there is almost always a social connection.
Even in cases where I met a founder who I believed to be 'self-made', turns out there's a story behind him like his wife's parents had sold their company for millions and his brother rubs shoulders with celebrities.