I come from the Minecraft modding/server community. There is interesting fact that I like to tell people about the sheer size of Roblox compared to other communities like Minecraft.
The largest Minecraft server in the world is Hypixel at around ~30K concurrent players. Most other servers are very far behind.
There is one Roblox game that looks and plays like Minecraft and copied one single gamemode (Bedwars) common in servers like Hypixel. It had 60K+ concurrent players last time I checked late last year.
There are almost definitely more people playing BedWars on Roblox than there are playing it on Minecraft at this very moment.
Some of it has to do with roblox being free.
(I don't have a minecraft account) but Trust me when I say this but within developing countries especially. You can find 3-4 people out of 1 who plays on hypixel but can't because they can't pay for the game usually when we are really young which is also roblox's most major userbase.
I can imagine Hypixel being atleast 2x and a rough estimate of 5x more the size if they support Cracked Minecraft accounts for example.
Btw, this is also the reason why aternos is so popular within some communities because a free server which can have cracked option. Sign me up starts happening in bulk.
Me and my friends had an aternos server. It was truly something out of this world meeting them tomorrow after having 10 people together in a minecraft server.
I was the person though who spent way too much time and had less stacked gear lol in the end because some of my friends were like bandits haha, who stole my stuff from caves and in general, I have spent much of my time in minecraft during the starting (nothing -> diamond) then afterwards (diamond -> end/netherite)
Anyways my point is that we all could've definitely been on hypixel and something similar if Hypixel supported crack client. For example 11 of us or more played the game one time or another (not sure) within our single class of 50 people and only one of the guys had an minecraft account.
One of my friends literally got into some cash-app type stuff with a shady tetris to earn money app which showed ads to earn 25$ just so that he can buy minecraft to play on hypixel and the game fundamentally required something impossible and my friend felt so depressed at the time and he's one of the smartest people I know. A) people are easy to scam, B) he and many of us had so much desperation to play on hypixel in general.
You can get an alt (and I used to) for free or very cheap which would work everywhere unless on hypixel which had stricter rules and the difference between account prices could be 10x back or more that at that point its just better to make a minecraft account just for hypixel or similar. (I remember seeing accounts for 3$ or something that would work everywhere except hypixel)
I asked him if I should write a blog post to name and fame the company but he denied and he was truly sad that day :(
All of this combined can show how Roblox truly hits a jackpot with it being a free game. Most people might not pay but because of the perceived fame of the game and the number of people playing it. The people who pay would be more likely to pay and I see some people/kids who really look for ways to make robux online.
So with all of this, its easy to see how these (usually teen developers like us) can make something which can land 100k$ as unachievable that sounds.
one of my friends racked in quite a lot of money making 3d sprites in blender for these roblox people and in exchange used to have them buy blender extensions. Those extensions were truly a lot of money if he had to go buy them.
these days, Roblox BedWars averages 36K on weekends:
https://romonitorstats.com/experience/6872265039/
however, Hypixel seems to have overtaken it! last Saturday, it peaked at 39,000 concurrent players. i prefer the original gamemode anyway