The Pixel XL was released in October of 2017 which means updates stop one year away from today in April of 2019. Top of the line is $968 and you want top of the line for best memory performance. Why buy one of those phones and purchase sub par performance? It's a waste of money. So if I wanted one I'd pay $80/month for a device that's replaced in October of this year (Pixel 2 is supposedly an end-of-year release) and dropped from feature upgrades not too long after that.
Google need to fix their feature window by extending it to two years and fix their supply pipeline by ordering apple-like quantities of product. Otherwise they're not really competing with Apple.