Consider some recent stats:

As of August 2019, mobile devices accounted for almost 52% of web page views globally
More than half of all shopping via internet traffic comes from a mobile device
Combined user spending in the App Store and Google Play is projected to reach 104 billion U.S. dollars in 2020, up 44% from 72 billion in 2018 
Mobile apps make up 57% of all digital media usage 
Smartphone apps alone account for more than half of digital media time spent
Gen Z engages with their most-used apps 30% more often than the rest of the population