I partnered with a much larger company to profit from an existing sales structure and their technical infrastucture. To me it seems like -- due to their size -- they wanted to cut a larger piece of the cake for themselves, so negotiations about the details didn't really come to an end. They started to create and sell the product on their own with lots of stolen concept details. I am glad they failed. My lesson is to bootstrap and implement fast. Don't worry if sales are not exploding. However, check if sales are pointing upwards and finance is under control.