But isn't all dependent on the frame? Amazon owns the monopoly of the ebooks for the KPF (Kindle Package Format), but it's not the monopoly of ebooks market.

But isn't all dependent on the frame? Amazon owns the monopoly of the ebooks for the KPF (Kindle Package Format), but it's not the monopoly of ebooks market. Google has the monopoly of search, but doesn't have the monopoly of advertising.