Those numbers are the numbers of hits and they haven’t changed significantly in weeks. That IS NOT the number of players and you can see on any given day the players actually playing online and active is typically 0 (or at most 1) on Roblox.
Goliath is correct. That's total number of hits, it could be someone that connected for 5 seconds.
If you watch the daily stats there 0-to max 2 people online at any time.
I don't know about you, but 2 people playing a game isn't going to keep the lights on.
Especially when roblox takes most of the money if they spend anything at all on the game.
Roblox pays out about 29 cents on the dollars to the developer for sold items.
So if they sell $1,000 - GMER gets $290.
Not all players spend money.
I'm not sure why they chose to focus on a Platform that takes most of the money. Probably because it's easier to make a game there, but it's easier for everyone else too, that's why there's so many games to compete with.