I don't think it's to do with that. I think it's just a reflection that google is a large company with lots of different products, half of which are providing d

I don't think it's to do with that. I think it's just a reflection that google is a large company with lots of different products, half of which are providing de facto free cloud storage, despite the fact that Google has a cloud storage offering. Also, by pushing the storage limit to onto a single Google account (rather than individual accounts for each product) they can push you into their suite of products (if you're already using the app with a rainbow coloured box icon they can push you to look at those other icons: like rainbox coloured box, or other rainbox coloured box, and the rainbow coloured box with a squiggle)