The problem tends to be the pricing. The per-episode and seasonal purchase rates often seem higher than going and buying a DVD, probably due to the store taking a cut. The streaming services, or even cable TV, are much cheaper if you make a lot of use of them.

The hope always seems to be to operate like a gym, where there are people paying but almost never showing up.

To me, a debate about pricing is totally separate from the arguments about the availability of options to buy content. You can

1) Buy individual episodes

2) Buy individual season

3) Buy individual channels (FX, HBO, with ESPN and Disney coming soon and more and more networks offering this option)

4) Buy bundles of content (cable, Netflix, Hulu, etc.)

Availability windows also seem to be designed to match consumers demands, you'll pay more to get copies of episodes right away vs waiting a season or two to buy them.

Again, I think it's fair to find the prices to be greater than what each individual is willing to pay, but I don't think the actual options are lacking in the same way they were 3 years ago.

If they were separate arguments, then album sales wouldn't have dropped after iTunes started selling $0.99 a song. CD Singles have been around forever but everyone paid the extra couple dollars to get the rest of the album even though in many cases very little effort was made producing the rest of the album.

To clarify, I don't mean that the delivery options won't have an impact on price. People often seem to frame the arguments around videos services as them not providing the unit of content they want (like marssaxman above), when more often than not they do. The real complaint is usually just what your saying, they don't offer it at the desired price, despite a ton of unbundling from the old model. That's a fair critique to make, although I'm hopeful the market is able to sort it out

And the store content also come 6 months to a year or more after the original air time.

Not sure where you’re getting that idea - pretty much every TV show available on iTunes is available the day it airs or the day after.

That may be true for traditional TV. Game of Thrones is currently airing season 7. Unless you subscribe to HBO you can only get season 6. Season 5 of House of Cards was released in May and still only available through Netflix.