The bypass key concept filled the gap left by Xerox in its sales of solid inks. Professor Color identified the gap and created an enterprise to provide value where Xerox couldn't. Their entrepreneurial/engineering skills are right up there with Elon Musk and Steve Jobs.
LOVE the bypass key. The individual ink blocks were all original and in perfect shape (no chips or chunks broken off). This is not an accident, it is a direct result of their care in packaging (see photo).