I resisted as long as I could. . . . .
In a cash game. the short stack(s) have the advantage over the big stacks, assuming there are plenty of both types at the table. This is 180 degrees different than in a tournament.
The short stacks can be selective and basically play "one pair hands" profitably with ease. The big stacks are well advised to keep an eye on the other big stacks and focus their play on defending vs the big stack and/or targeting the big stack. The shorty stacks are often not worthy of careful attention.
I am thrilled to play in games where I buy in for 100bb-200bb playing against 400bb+ stacks. More so if there is a LAG or two who like to bet it up. This leads to a steady parade of easy situations where I get my stack in play with a sizable +EV. Generally this lead to getting deeper myself and requires an adjustment in play to reflect the stack sizes.
The big stack can't push my short stack around, though they can price out my speculative hands. On the other hand, the short stack is constantly getting all-in or close to in, putting everyone else to the test. Ok, sure I get my blinds stolen. And some of my limps too. But when I take a bite out of a big stack it is going to be a lot larger than 1bb.
Rebuys for huge amounts are generally bad for the long term health of the game. The worst players get burned too often for too much and they just quit playing. Limiting the rebuy amount is good for the weaker players and good for the game.
DrStrange