- Very few people got lot of money; much smaller number got moderate amount and have profit; all others are unprofitable.
But this is about natural things. - In most countries, distribution is distorted by taxes, by regulations and by technical progress.
What I read from statistics, 100 years ago, in US most people where poor, but exists very few extremely wealthy humans; after science-tech revolution and two wars in 1940s, in US appear large middle class.
And (this is from talks) latest 10s years, middle class divide again, so there are more people with more than million, but also more people from middle class switched to poor.
Probably, the same happen with small game dev entrepreneurs - 10 years ago, I myself have seen significant number of successful people, but after that, I see, some people remain successful, but others become ordinary.
There are of course exceptions to the rule - I may as well have said that no authors make money, or no painters make money or no YouTube creators make money.
Clearly _some_ do make money, but as a percentage of the whole the actual number is a rounding error away from zero.
Which is all to say, if you want to do something for pleasure then do it. There's a lottery-ajacent risk it'll turn into a money spinner for you. But doing these sorts of creative persuits with the express purpose of making money seems to me to be (at best) unlikely to succeed.
Creative persuits must be their own reward - any money Is a bonus.