Tbf RWF requires an insane amount of time and commitment that is not sustainable for the majority of guilds.
This is why no one takes you seriously. The amount of people that raid mythic is more than 1%
This part is actually sustainable. The unsustainable part is the money. There just isn’t enough money in the WoW scene for more than 2-3 guilds to pay salaries to 30-35 players, analysts, weak aura devs, etc. Especially when they only play 3-4 weeks a year.