It depends on how useful the advertising is. It's not the tracking or privacy the regular user is most concerned about, it's the everyday experience that tells him advertising is still stupid and annoying.

Despite all the billion dollars ML systems with gazillion of factors analyzed on petabytes of data, all we've got is 'hey, you googled for a 10uA accuracy bench multimeter yesterday! now for two weeks we will show you all the $15 multimeters ever existed!'.

Look at this (don't worry, it's short one-page) thread for example of how it might be instead - https://www.eevblog.com/forum/testgear/benchtop-dmm-advise-n... - and what if the message from Tek engineer that closed a deal was actually advertising? He just posted a link to relevant appnote, that's it. What if automatical advertising system showed the same link to the same appnote as an advertising to the same user?