Economies of scale ruined it. Good indie games like Super meat boy & Hollow Knight take more human resources than AAA-gamechanger Doom did, back in the day. Your 'kind of useful but fun/dirty' hacker project either becomes ad-infested to survive or is too-useful and gets copied by a big-company. If your problem is cool enough and you can solve it, investors will throw millions at you in hopes of making a global succe…
This is demonstrably false in my metropolitan area, we even have a few which are supermarket sized. They're often ethnic. Read an essay somewhere a month or two ago about how the supply chain economics are different, can't find it now. Think Zillow vs a guy with a lawnmower in the back of his pickup truck.