Small business and other organizations will follow to not be left out. You only need to do this once or a handful of times before society will learn to shift schedules on their own.
Clocks update themselves. Store hour signs, bus tables, stickers in windows, business cards, Outlook calendars, etc. They do not.
I don't like changing clocks twice a year; sticking with one time-zone offset is better. But having the entire population shift their working, banking, classroom, and service hours ad hoc is strictly worse than a universal hour shift. Instead of "Open M-F, 9a-5p", you suggest that "Open M-F, 9a-5p, Winter, 10a-6p Summer" is more elegant? Because that's what all vinyl stickers on glass doors would look like.
And it's still centralized and regulated, just like DST is now. So what have we gained?
There's more examples like this, famously electric negative and positive poles that would have been reversed compared to the current standard if the scientists would have known how things work.
Many current standards have unintuitive quirks that only live on because they're old and entrenched, and that wouldn't have existed if the standards were set today instead.
So let's stop with the dumb quirks before it's entrenched.