It's not just analytics, but also expected level of support. You can still buy win 10. The major point of the free win 8 upgrade was to let them avoid supporti

It's not just analytics, but also expected level of support. You can still buy win 10. The major point of the free win 8 upgrade was to let them avoid supporting the old version, which indicates the value of it to them was more than the cost of getting everyone to buy a new license. Note that the free upgrade is not supposed to be transferable. New computer means new license, so you gotta pay.