Following a giant company on social media is pointless. A large majority of their posts are dumb memes, or clever ways to be funny. It’s never anything of substance.
Or if companies just found out that their interesting-but-not-high-valence posts end up not going anywhere... so they create dumb memes or clever ways to be funny.
Either way though we're caught in a death spiral of algorithmic selection and self-selection leaving us with drivel - making us less likely to follow companies and companies increasingly less willing to invest in quality content or content creators. Then round and round it goes.