"Fleeing TV" -- indeed, a shift is being observed. However, the medium exists because of advertising. Also, the audience segment that time-shifts is not yet at a critical mass, though rising. And, live event TV (sports) is still doing exceptionally well because of advertising.
Email is another matter. Being a former advertising executive would you believe I never did an email campaign? (Probably not) Email spam (simultaneously posted advertising message) has always been more considered a path to malicious exploit than legitimate advertising.
I'm not denying that an increasing segment of users are becoming frustrated with ads, only stating advertising is the best method we have _now_ for monetizing content that costs some degree of expense to obtain and disseminate.