Storage space isn’t the issue, data caps are. There’s a whole lot of people, at least here in the US, who are screwed by data caps by their ISPs. My ISP is a practical example. They’re the only one in town (for now) and up until last May they didn’t offer unlimited data as an add-on option. Before that, their limits were 1.5tb per month for 300mbps plans or lower and 2tb per month for their 500mbps plan.
Between streaming and gaming, we were always pushing the limit of the 2tb cap every month to the point where we were self rationing usage by the end of every month. Thankfully this is no longer an issue but I know many others who still have to manage draconian monthly data usage.