Yup. It's all about the branding budget. The actual game doesn't matter. In theory Apple or Disney or somebody could do it (but why would they? they operate on a scale an order of magnitude higher), but not any company in the TTRPG space right now. That's the sad reality: the branding is what matters, not the game quality. That said, it helps that 5E is a good game.The problem all the clones are going to find is that for a huge swathe of the population, it ain't the game rules they care about, it's the name 'Dungeons & Dragons'.
Branding is hard and it's expensive.