For HDD space these days, inelastic costs are a tiny portion of most people's available space.
Most people these days have a decent amount of hard disk space, enough for essentials, with plenty left over for discretionary usage. Although software binaries and video games are larger than ever, and pictures and video have higher resolutions, changes in the distribution of commercial media have made it less necessary to have storage space for music and commercial movies. With the vast majority of people having enough space, few people are hurt if some others require more space -- those people can just buy more storage, and doing so does not affect people who have enough space.
Roads and housing are different, because one person's usage of a particular instance deprives part or all of another person's use. People (and businesses) may be able to attain a comparative advantage by deriving more benefit from their consumption pattern of these scarce resources than drawbacks they suffer from the consumption patterns of others, so any "spare" capacity is an opportunity for someone to benefit. Demand is thereby induced.
Most people these days have a decent amount of hard disk space, enough for essentials, with plenty left over for discretionary usage. Although software binaries and video games are larger than ever, and pictures and video have higher resolutions, changes in the distribution of commercial media have made it less necessary to have storage space for music and commercial movies. With the vast majority of people having enough space, few people are hurt if some others require more space -- those people can just buy more storage, and doing so does not affect people who have enough space.
Roads and housing are different, because one person's usage of a particular instance deprives part or all of another person's use. People (and businesses) may be able to attain a comparative advantage by deriving more benefit from their consumption pattern of these scarce resources than drawbacks they suffer from the consumption patterns of others, so any "spare" capacity is an opportunity for someone to benefit. Demand is thereby induced.