This has been true so far in the US, but there are countries where ISPs transparently provide different bandwidths to different types of content, and customers pick and choose service plans for each in a package deal.
The transparency might be ok to choose among service plans of a single ISP, but I suspect those other countries have a fundamental underlying commonality that most US markets are missing. Their markets are structured via regulation, or just happen to be currently constructed, with multiple ISP competing for the business of the end user.