Are OneDrive files included in SharePoint Online storage limit?

Or - Microsoft resolutely refuses to think about "what is this like for the client" especially when the clients are anything other than other mega-corporates, and steadfastly insists on hiring multiple teams to do overlapping developments while refusing to pay any attention to the history and existing usage of the products and ... hires a lot of lawyers to write licensing agreements that are incomprehensible at best, rather than hiring some clear thinkers to make the product lines clear and simple. On the bright side, the documentation teams have started producing some good documentation over the last few years, so its possible that enough people crying loudly with despair will prompt a similar improvement in the Licensing and Terms of Trade teams. I'm ever hopeful.