Originality in Movies

There was a movie produced around 2005 and it is called Click. It is an Adam Sandler movie where his character, a middle class American working for a Real Estate firm comes across a universal remote that can pause and fast forward as well as other capabilities. This device does make his life easier, however, his excessive use of the remote ultimatly leads to his demise. This idea is unique in itself and does sound original, which is what I thought at first. However, I found out that the film actually rips off It's a Wonderful Life and Back to the Future Two. It seems that truly original ideas are hard to come by today, especially in the film industry. As decades have passed the number of original movie plots has gone down at a constant rate, which makes sence because as time passes, it becomesharder to come up with original ideas.
As a way to compensate for the lack of originality, movie producers simply remake the old version or create a sequel. Sequels are very common today, and just recently, there was a rumor that a second It's a Wonderful Life was going to be made. That was later found untrue.
With this new-found way of producing movies without having to think of new ideas, could we see in the near future remakes or remakes of remakes? And if that does happen it is likely that no one will even notice, because eventually the original will be so old that nobody will remember it. We also might see titles like Avatar 2, 3, or 4 with regards to movie sequels, like what happened to Starwars.