This is because of capitalism and fast pace of life. Some use transportation time to do a lot of things they can't do otherwise like sleeping, cutting nails or applying make up. Some also to work or study.
The 20-80 rules applies here. Anyway, that is a strategy that works for me too.
The rest would be SMS. Sending files is links to my self hosted nextcloud.
You will still meet invalid beggars, burglars and dirty windshield washers when driving.
By invalid, I do not mean real invalid people but those who fake it with for example apparent urine bag and the like.