What you’re describing falls more under PTC sites and traffic exchange networks, not traditional PPC platforms like Overture or Bing Ads.
Sites like Vagex, NeoBux, and similar “watch ads for credits” models were popular years ago, but most either shut down or became low-quality due to bot abuse and advertiser distrust.
Some traffic exchange and microtask platforms still exist today, but they’re generally used for testing or low-value traffic rather than anything serious, and many advertisers avoid them due to ToS and conversion issues.