Definitely as a millennial I'm of the last generation that will remember arranging to meet up somewhere in advance and sticking to that plan (or rearranging over landline with more than a day's notice...)
But something I've noticed when I ask people in my team what their dream jobs are the younger people tend to say 'run their own businesses', 'work for themselves' etc. Whereas in our generation (in my circles anyway) that definitely wasn't so prominent. Maybe a side effect of seeing influencers making it big?