A sizeable chunk of the market doesn't disagree with me but rather get something than nothing. If Google can generate the same ad revenue of close enough to it

A sizeable chunk of the market doesn't disagree with me but rather get something than nothing. If Google can generate the same ad revenue of close enough to it without having you to force your users to agree or opt-out into oblivion in which case you lose the revenue stream from all users that opt-out. It's also important to note that Google's non-targeted ads server two functions as they both allow you to display ads to users who did not consent to data collection as well as potentially protects you as an advertiser from ensuring that your ads are delivered in a GDPR compliant manner. Under the broader interpretation of the GDPR you as an advertiser might be liable if you buy spaces for targeted ads that are displayed unlawfully and this is because GDPR essentially mandates that you must ensure the compliance of your partners.