At certain point storage will probably grow to such high numbers.
Need for inventing new methods to limit those will be purely dependent on cost of space at the time.
HOWEVER
This doesnt mean that we will end up with games/movies/data growing much bigger than it is right now because we will still need to be able to for example process it. Storage is dependent on so many different areas and right now its not the bottleneck.
Data usually expand as much as it can without seeing much resistance. So if you have a possibility to download, process and use files that are for example 100 terabytes then data will follow and such files/movies/games will find their way into the market.
Life example :
Old games size under 1GB everything was compressed, starting with installer and ending up with graphics. Engine was about 500 MB and media around 600 MB
Current games size above 40 GB .. no compression used. Cheaper to develop, look better but the engine alone without graphics is still about 600 MB but the media are not compressed and often have copies of themselves for different resolutions (since its easier this way) and they take rest of the space.