Chromebooks are very popular as a first laptop for children and teens these days, they are cheap many can be had under 200$ and they provide basic office and apps/games especially now with the play store.
Effectively Chromebooks are the new "EEE PC"/netbook which were also very popular with children and teens as they were chip as dirt which meant that they were often bought as a gift or when a child needed a 2nd computer to take with them.
So when you have devices that cost 199 it's not that surprising that they outsell devices that cost 899 and upwards.
If the "premium" chromebooks outsold MBP's/MB's it would be as much as a surprise to me as why would anyone want to put a Core i7/i5 CPU and upto 16GB's of RAM in a chromebook in the first place.
Effectively Chromebooks are the new "EEE PC"/netbook which were also very popular with children and teens as they were chip as dirt which meant that they were often bought as a gift or when a child needed a 2nd computer to take with them.
So when you have devices that cost 199 it's not that surprising that they outsell devices that cost 899 and upwards.
If the "premium" chromebooks outsold MBP's/MB's it would be as much as a surprise to me as why would anyone want to put a Core i7/i5 CPU and upto 16GB's of RAM in a chromebook in the first place.