One test of a bubble is how many entrepreneurs are focused on their upcoming payday rather than on the big things they hope to accomplish. Me-too products are almost always payday-focused; the entrepreneurs who first made the market often had much less expectation of easy success, and were instead wrestling, like Jacob with the angel, with a hard problem that they thought they could solve, or at the very least make a dent on.

Work on Stuff that Matters: First Principles - O’Reilly Radar