Hardcore “competitive” RTS (StarCraft/Age of Empires) can’t since it’s not competitive enough if you can’t hit a meaningful 300+ actions per minute, which is impossible without hotkeys. Even IF they could, I am skeptical you’d get converts. Even IF all of them converted, hardcore RTS is not thriving right now. You’d have to create the perfect game and you’d be rewarded with less players than a Minecraft clone.
DOTA, Rocket League, CSGO, etc. are e-sports friendly but don’t have this population problem. It’s not about being “hardcore”; it’s about having broad appeal to hit a wide market segment. RTS has struggled with that historically. Tower defense and MOBA are two examples where RTS was simplified to a broader appeal game.
StarCraft 2: Wings of Liberty sold 6 million, but only small fraction of the playerbase is interested in competitve aspect.
Minecraft is just an online sandbox. Most people will play it like that.
Plus a gamedev doesn't need to take into account what sells, but what kind of competition you have. How will your Minecraft clone exist in market with Minecraft vs how will your M
RTS live in a market with StarCraft 2.