I think we will see a lot more 4K content by 2017. The movies in production right now or released as of Star Wars are ready for the 4K market to take off. There maybe 25 or so 4K blu-ray movies in the market right now, but that number will change and will be in hundreds, just like Avatar changed the number for 3D movies. However, unlike 3D, 4K has real benefits and is not a gimmick. Movies are already shot close to 4K, so there is nothing extra that has to be done there to bring it to mass market. Right now the MSRP of 4K and 3D blu-ray movies is in the same $29.99 range (with regular blu-rays in the $24.99 range), so it's easier for the studio to justify the price.
Just as an idea, in the wedding industry, I can already produce native 4K wedding films if necessary. The content is already there. The demand will be generated when your home hardware next year is all 4K and beyond. The good thing it'll do is make 1080p TVs dirt cheap. Though since you're talking about Cable/Satellite market, know that they've always been the last one to adopt any technological advancement, always. They were the last to provide 720p, and the last to provide 1080p. They will be the last to provide 4K. And yet, they're already announcing 4KTV content for the mass market for select channels (e.g. Rogers 4K service:
http://www.rogers.com/consumer/tv/4k).