Well for almost any service, people would rather prefer it to be free than paid, so it's almost an instinctive emotional reaction. Google being huge makes it a particularly easy target.
Also many of us _do_ pay Google quite a bit already, e.g. via YouTube Premium, Google Drive storage space, YouTube Music, Android application purchases/subscriptions, Google hardware purchases, etc..
Some others may even be Google's suppliers, such as operators of Youtube channels, devs on the Play Store, etc. etc.
Some others may even be Google's suppliers, such as operators of Youtube channels, devs on the Play Store, etc. etc.