Some businesses go for years without being significantly challenged by a competitor. In some cases, it's because their niche is so small that it is not worth other companies' time. Hopefully, though, it's because the company has a moat, competitive advantages so strong that new entrants think twice before challenging the business.
A great example is Sirius XM
Another example is Altria
Every so often, though, a competitor comes along to challenge what seems like an impregnable moat. For example, some investors worry that the increasingly omnipresent Pandora will have an effect on Sirius. However, Sirius’ scale and paying subscriber base should be more than enough to keep Pandora largely irrelevant to Sirius.
In a different case, Blackboard
However, Instructure could be a real threat. It was started by Josh Coates, formerly of Mozy and EMC. According to TechCrunch, Instructive raised $1.5 million in 2010, with Coates contributing half. After only a year, the company is working with 26 educational institutions, some which used to be Blackboard clients. Instructure's LMS is called Canvas and is cloud-based, but universities can also download an open-source version of the product for free and pay extra for tech support.
Instructure introduces itself in a remake of Apple's iconic 1984 Superbowl commercial, except this time the model is carrying a flamethrower instead of a sledge hammer. Interestingly, Instructure CEO Coates made the flamethrower (he's also remade a WW2 M18 Hellcat Tank Destroyer). It's well worth the watch, the last 10 seconds are spectacular: