For example, Filecoin lets you store data for $2.33 per TB per year. If you used S3 that would be $150. The Golem network let's you run compute jobs for $0.003 per CPU core per hour.
The only barrier here is software. There just aren't enough developers to build anything useful. There could be a user-friendly web service like the AWS console that enables normal developers to use this stuff, but nobody has built one yet. Golem could support GPU compute so that people can use it to train AI models cheaply, but they are short on devs so that feature is still in the backlog.
Give it time. Encrypted email has been possible since at least the 90s, but many hospitals still haven't adopted it and are using fax machines. Before people can adopt crypto, they first need to understand it, and that's not going to happen for a long time.