[capableweb]

"the most "valuable" users are all on mobile Safari"

Not at all, as only 20% of the people using mobile browsers at all, are using Safari.

[The_rationalist]

To be accurate: Safari has 20% of mobile browser marketshare. And 5% of desktop browser marketshare. So globally they are <20%

[yoz-y]

Yes but these users account for a very disproportionate amount of spending.