If you’re a regular internet user the Personal Data Storage paradigm won’t move your data from the cloud to your personal computer. Most people will still rely on an institutional cloud service, but instead of data-banking with a shareholder-controlled corporation people’s data can be entrusted to the equivalent of member-owned credit unions for data storage.
This! Invest in local storage as much as possible, ideally create your own proper storage server! Given how fragmented and volatile things are becoming, this isn’t even just about access anymore, it’s about archival as well.