Bold in Games + Thread conception proposition

If my memory isn't playing tricks on me, it has been suggested already and I definitely suggested this once. Not the markup syntax but a more simplified forum-like layout. Click the B icon for bold, i for italics and u for underline. Different text sizes, probably fonts too.

I don't know why this is so hard to implement. I was thinking of something similar for games (the textbox logic cube). I understand that adding that to the game client might be hard or might cause issues but the website? It should already be a thing