So many bands lose their creative spark after the first album or two, and it's exactly because of this mentality. I'd rather have one album of music carefully curated over 4 years than four albums than have 4 albums rushed out over a year. The creative process takes time. If you just rush out the next album you're probably just adding onto the already massive heap of formulaic uninspired music. I'm not saying you can't have quality AND quantity, but the number of bands who can crank out both is limited.