I can tell you how the ad companies will implement this. For Rewarded ads (the longest ones, that are at least 30 seconds, and sometimes as high as 60 seconds), they'll move to that succession model, but the succession will take you at least 30 seconds. Oh you skipped an ad after 5 seconds? No worries, here's another ad. You watched the first ad for the full 30 seconds? No more ads for you.

It'll probably be a win for them.