The LCC's really have got this off to a tee, they now also seem to be limiting the number of Priority fares on each flight that include a larger carry-on. I think Easyjet have a max number of large cabin bags of 90 per A320 flight and above this, all further bags are gate checked. So basically if you have bought a fare that includes a larger cabin bag then it is up to you to ensure you are at the gate to be one of the first 90 to board. If you aren't, tough luck and your rollaboard wull be gate checked.

Contrast this to the BA shambles whereby I reckon pre- Covid, at least 30% of flights I took were delayed on departure because too many cabin bags have been allowed on. The LCC policy is to be proactive and ensure only the number of bags get on board that there is physically room for. BA's policy seems to be to let everything anyone wants on board and then reactively offload it afterwards once boarding is complete. So many times I have seen BA CC wheeling bags up the aisle after everyone has boarded to offload them for check-in to the hold. Why is BA so useless at this?