Surface revenue in 2018 was about 5 billion. Apple’s ipad revenue was a bit under 20 billion. And these surface numbers are for everything in the surface line, not just pros.
A more likely explanation for lower ipad sales is that they last a long time. My ipad air 2 from 2014 still runs beautifully and gets security and software updates. But in any case ipad sales dwarf the surface and and chromebook sales combined.
About 43 million ipads in 2018: https://www.lifewire.com/how-many-ipads-sold-1994296
Chromebook is estimated to be under 11 million: https://www.computerworld.com/article/2476098/huge-chromeboo...
I couldn’t find 2018 unit estimates for the surfsce, but in 2017 the estimate was about 3 million: https://www.pcworld.com/article/3254235/microsofts-surface-p...
Surface revenue in 2018 was about 5 billion. Apple’s ipad revenue was a bit under 20 billion. And these surface numbers are for everything in the surface line, not just pros.
A more likely explanation for lower ipad sales is that they last a long time. My ipad air 2 from 2014 still runs beautifully and gets security and software updates. But in any case ipad sales dwarf the surface and and chromebook sales combined.