I'm sure the usage of the Picasa desktop app wasn't very high, and the Photos web version captures most of the features users wanted like albums, editing, taggi

I'm sure the usage of the Picasa desktop app wasn't very high, and the Photos web version captures most of the features users wanted like albums, editing, tagging and sharing (lacking folders still). Nothing wrong with Google thinking that Picasa usage didn't justify continued development. Other companies are free to make a great native desktop app for photos as their core product, but Google is surely thrilled with the reception of Photos.