Reading John Gourville’s “Eager Sellers, Stony Buyers” changed how I think about innovation. It is easy to assume that if something is better, people will naturally adopt it. But Gourville points out that people value what they already have about three times more than something new, while companies value their innovations about three times more than they should. That mismatch, which he calls the “9x effect,” explains why even strong products often fail to catch on.
I have seen this happen in real life. During one of my internships, our team launched a new dashboard that was cleaner, faster, and more efficient than the old one. We expected people to switch immediately. Instead, almost everyone stuck with the older system. At the time, it was confusing, but now I understand why. Every missing shortcut or small layout change felt like a loss to the users, not an improvement. They were comfortable with what they knew, and we underestimated how much that mattered.
Gourville explains that most companies fail not because of poor technology, but because of behavior change. People do not just evaluate new products logically. They compare them against their routines and habits. Webvan failed because it did not account for what people would have to give up, like choosing their own produce or discovering new items while shopping. The loss of those small experiences outweighed the convenience of delivery. Unless the perceived benefits are much greater than the perceived losses, adoption will always be slow.
The part that stood out most to me was the idea of reducing behavior change instead of fighting it. The products that succeed are the ones that make users feel familiar, even while improving their experience. Toyota’s Prius worked because it introduced a major innovation without changing the driving experience. Drivers could get better fuel efficiency without learning anything new.
For product managers, the challenge is to balance innovation with empathy. It is not enough to make something better. You have to make change feel safe. That means understanding loss aversion, finding early adopters who are not attached to the old system, and designing transitions that minimize disruption.
The main lesson I took from this reading is that innovation is not about convincing people to like new things. It is about respecting why they love what already exists. Good design bridges that emotional gap. It does not ask people to leap; it makes the next step feel natural.
