It's an interesting idea, but for me I'm not interested in paying to provide something to a company for them to profit from. That would definitely be a win-win for them and I don't fault the company from attempting it, but I don't see myself being involved in it. There are several "free" reporting sites that appreciate and seek data to incorporate in their public websites. These may not have web/weather camera feeds but I built my station to furnish data...my weather-cam was an afterthought.
Also, starting from scratch and building a public presence/awareness of anything close to what WU has will take quiet a while...just as it took them to get to where they are at in that regard. And, they didn't charge anything to host the data. (I just looked and WU was founded 23 years ago.)
I wish you the best on this but I seriously don't see it working out if you charge people to upload their data to you. Maybe I'm wrong, maybe I'm too narrow-minded, but....