Do you wait for the trilogy to be complete before reading?

I have a thread on Goodreads currently asking whether readers actually wait for the whole trilogy or series to be available before buying (so there isn't that separation of years between cliff-hangers) or if they buy as they come out.
Interestingly enough, I have found roughly 60% would rather wait out the series and then start reading it.
Then I put the idea to them; What if all three books of a trilogy were combined into one book? Would that make sense? I have recieved a resounding YES!

So, n...