I agree with redonihunter; it depends solely on the game and platform. In my opinion, even the developer
1. If it’s a small game by a small developer- free with ads would be the most reachable to the general public.
2. If it’s a small game by a more popular developer- paid would be looked down upon. Free with ads would still be the best.
3. If it’s an ambitious game by a small developer- you would have to promote it enough to make people wanna buy it. Once you do then ads would be less profitable.
4. If it’s an ambitious game by a popular developer- do whatever you want lmao.
The game and platform should tie together.
Smaller game- put it on platforms that everyone already has. You would groan and roll your eyes if you had to make an entire account for an unknown website just to play flappy bird lol
More ambitious- you’re able to put it pretty much anywhere as long as you advertise well. If you’re a popular developer, you can even strive for console
(this is all my opinion I might be very wrong!)