What's the point of new expansion

all those theorycrafting and steams of new expansion and agressive marketing to be meta by decks from last year dont know why spending money on new expansion so we need now to sit and wait for month to get nerf to see if our cards have some interests

answer to this simple post, since 99% of players think they’re spending real money on virtual stuff smartly, why not release 26 expansions a year and vacuum-clean stratospheric profit margins, being able to done without anyone who opposes maneuvering the strings of the whole carousel at will always answering “rng, rng, rng….”