The utility to having a central location for badges will be if you can find a way to establish virality. That would lead to new people wanting to earn these bad

The utility to having a central location for badges will be if you can find a way to establish virality. That would lead to new people wanting to earn these badges, which leads to directing traffic towards the company's site/application. A user being able to see all their badges in one place doesn't really provide much benefit for the company. If however, you can find a way to promote those companies through those badges (posting "User X just earned Badge Y on Site Z!" on Facebook, for example, then you might have something that someone would be willing to pay for. It sounds like you don't plan on providing a service to actually determine when to award badges and are instead leaving that up to the companies themselves, so the above would be the only advantage to using the service that I can see. You have to think of "how does this benefit my customer ?"(in this case a site).