To a certain extent, nothing has been truly original for an extremely long time. There is a fine line to walk when it comes to paying homage to and being inspired by something while making something your own, versus copying or ripping something off in bad taste while adding very little of your own.
Your question sounds more like it revolves around IP recycling in general, however. Get used to it in a neverending cycle, as risk averse entertainment companies know that reboots and sequels which can take advantage of existing fans and a track record of success are a safer bet than taking the risk of putting out something new and unknown, and it also requires a great deal less effort on their parts. Oftentimes they'll own the IP wholesale and not have to worry about negotiating anything or paying for development. They will have even more materials to pick and choose from as time goes on, as well.
There really isn't any way around it, as much as I personally dislike it. You'll still get a handful of "original" materials, but anything successful will almost immediately find itself in sequel and spinoff hell. Everything will have periods of dormancy for the most part, but anything successful or popular or marketable enough will eventually find its way back in some form.
