Re: I'd consider paying for Netflix but
> I have a bigger collection of DVDs than it has films available to watch
It's not the number that matters (OK, it is to some extent) but the quality. Many years ago we took out a subscription to an online video service. They advertised the thousands of films they had available as being a major draw. It probably was if you were willing to waste your life on the sort of dross that is available from Sky Movies. However, going through a significant proportion of the list we discovered that only 4% of their films sparked any interest at all.
Given that a person will only accumulate DVDs they like, or choose, I'd want any online service today to offer at least 25 times as many movies as we have DVDs. And that would only get them to parity. The sad thing is that there probably aren't enough (good) films made in a year to supply 1 a week that we'd actually want to spend time watching.