Wouldn't cross TZ collaboration be even harder of each individual business was possibly changing their operating hours though, especially if they ended up choosing different start/end dates
What I've seen in practice, is that when working in Australia we had recurring meetings set in California local time. So those moved around 2h during the year.
When people change their hours, they usually tell you. When they change to DST, they just assume you know.
Cross time zone collaboration is made harder.
Mostly, I am aware of the DST shenanigans in my local jurisdiction, but keeping track of other people's DST is an extra hassle.
Just not mucking with the clocks is easier.
> It's not different from the jetlag that they subject themselves to willfully.
Just because you are willing to indulge in some pain to achieve some end, doesn't make the pain go away.