Usually there are several hours of reasonable buffer in the morning. We're only talking about moving wakeup time by one hour here.

That massively depends on where you live. The northern most city of British Columbia is Atlin and during some parts of the year the sun doesn't rise until 9:54 AM.

If you take into account places further north than British Columbia it gets even more extreme. Barrows Alaska has the sunrise after 1 PM some days. Do you think businesses, schools, etc are going to start at 1 PM on those days?