This isn't really happening much any more. Spinning-platter HDs are barely increasing in size any more (I got a 4TB portable drive 5 years ago that I still use; now, looking at what's available, 5TB is the max and 4TB is still at the high end). SSDs are growing, but still not cost-competitive with spinning platters, and not really reliable for long-term offline storage anyway like spinning platters.

There just isn't that much demand for large-scale storage, since everyone just keeps their data "in the cloud" or has subscriptions to online services now. 20 years ago, HD sizes were doubling every year.