So I'm not super well versed with Roblox, but I'd assumed it was aimed at a younger audience?

So wouldn't the above numbers indicate that you have a growing younger gamer population (e.g. in Roblox), and an older one in Steam? And that it would be reasonable to think that many of the current Roblox gamers would transition across to games in platforms like steam, but they cater to a different need or desire in the coming decades?

Or does Roblox have everything that games offer on Steam already? Can I get my Sekiro experience there, or Star Sector, or Civ, or Witcher?

There's no denying that Roblox is immensely popular, but maybe it's OK if Steam has more niche stuff in the long run? There's still big money to be made, especially for small developers.

And also aren't we comparing overall platforms to individual game performance? To compare _all_ of roblox against a single game (BF6) doesn't seem right, no? Shouldn't we be comparing the most popular Roblox experience instead (whatever that may be)?