Sterns been going strong for almost 30 years, im pretty sure he has passed the hes just a fad stage 2 decades ago.
Why would he do that? Assuming that despite the fact he has sold some shares, he is probably one of the largest current single shareholders in the company even still.
His show on E! was E!s #1 rated program.
Do more? You mean do more then bring subscriptions from 600,000 when he signed on to 9 million? (Siri alone) What more do you expect him to do? Hold guns to peoples head and make them buy subscriptions? He does have a gazillion shares that are now worth less then 10% of what they were valued at when Siri paid him in the shares. This is why im guessing he will resign for another 2 or 3 years. He bought a house and a lifestyle based on a 100 million a year income and ended up with far far less then that once you factor in the stock drop.