Why don't people talk about this anymore?
America also has the megacorporations. Trillion dollar companies which can hire hundred of thousands of people and pay them what a medium-sized business owner would make. They have the economy of scale; they can pay a single engineer to increase profit by 0.01% and it would be more than a startup growing stuff by 3x.
The odds of me joining a megacorp is nearly nil due to immigration restrictions, so businesses are still more sensible. It's probably the case for most of the world.
I was just thinking about this the other day. Once, it was frequent to see resources for starting small businesses and while they still may be “available”, it is not prominent.
Starting a small business is an advancement of personal power!