In the past, I think I've only noticed Chase (and Capital One/Barclays) doing this when either the economy is south (housing bubble, COVID, etc.) or when they *think* the economy is headed south.

I don't recall Citi or Amex doing this (at least to me).
But Cap One, Barclay, and Chase, definitely in the past.

I'll correct myself on Citi - the "store branded" cards like Home Depot, and Synchrony Bank with Lowe's. (if I routinely use the card, I've had a CLI as high as $23,000). Typically only use those for the 0% for 12,18,24 months. Then when I don't need any home improvement stuff, eventually they'll lower to like $2,500 or something.