The greatest incentive is consumer demand. The sooner people start demanding more context, the sooner content providers will make changes to their product.
I can imagine making such changes would negatively affect a company’s business, leading them to misrepresent themselves. One idea to prevent this is to have a third party keep them in check. Although most user data is proprietary to the companies themselves, I think it is still possible to legally access metrics on viewership, possibly through search engines or marketing firms.