Did you read the context of the conversation or just decide to pick on one line of my comment and make irrelevant replies?

The conversation is in the context of airlines making changes to their policies, and the parent poster made a claim that there was nothing stopping them from making those changes as there was no regulation or otherwise preventing them.

I am making the argument that wide changes in industries don't typically happen just like that even if there is no specific entity stopping them from making those changes. Industries settle on some equilibria, and trigger events like the pandemic or other major issues create the seed around which many players simultaneously implement changes.

The housekeeping change is an example of that.

It doesn't matter whether the older system is better or newer. The point is that hotels could have switched to a opt-in system any time, but most did not. The wide change happened triggered by the pandemic.