Sega don't own their own songs?
Yes for some games.
Sonic 1, Sonic 2, Streets of Rage 1-3, Sonic 3 (some of them), Crazy Taxi (some of them), Jet Set Radio (some of them).
Remember when Sonic the Hedgehog’s official twitter account made a video meme of 'You cheated not only the game, but yourself'?
They didn't use song from Marble Zone for that video eventough the stage was Marble Zone.
Can you imagine if Matrix started today? I bet that would knock Squid Games from YouTubes algorithm with some quality content.
Well it might be true but sometimes... Internet is kinda weird. There were always quality contents that somehow couldn't be popular.