Games are designed to take advantage of the hardware capabilities commonly available in gaming PCs and consoles. If CPU/GPU performance or RAM/storage capacity increases, it's always possible to make a game a little bit better by taking advantage of it.

2 TB SSDs became affordable ~5 years ago, and HDDs of similar size were affordable long before that. Unless you have a laptop from a manufacturer with a pricing model designed to create artificial scarcity of storage space, 100-gigabyte games are not a real issue.