You are worth ~26€ to Google. On average, only ~5% of users are willing to pay, so each paying user would have to subsidize ~19 non-paying users for such a model to be profitable.

This would result in you paying around 600€ to use Google.

Alternatively, in a paid-only scenario (where you just pay the 26€), Google would become such a niche product that it'd become irrelevant.