You don't even need a new set of owners to change things. All it would take is replacing key people under whose watch things have gotten so bad in terms of customer service. The thing is the City is happy with higher than ever profits, ever growing load factors and dividends so unfortunately things will never change.
City looks to make money........ companies being bought and sold make it money.
If Easyjet is sold the cost if it has to be made back for the new owners.