The irony is that there's a disincentive to skip ads on 'paid' users even more -- because people willing to pay for things are even more valuable to advertisers

The irony is that there's a disincentive to skip ads on 'paid' users even more -- because people willing to pay for things are even more valuable to advertisers -- so if you make a paid option with no ads, you're also gutting the value of the freemium-ads option (beyond the average user loss)