https://phys.org/news/2018-08-speculation-stock.html

The authors detected bubbles in approximately 73 percent of the innovations they studied, revealing the close relationship between innovation and stock market bubbles. Further, they found that the magnitude of the bubbles is tied to the awareness levels or visibility of each innovation. In other words, the more broadly known the innovation, the more likely the presence of a stock market bubble in the industry where the innovation is introduced.

But awareness and innovation aren't the only drivers for the stock market bubbles. The higher degree of "radicalness" for innovations is more likely to bolster the clout of the specific innovation in the marketplace, otherwise known as an "indirect network effect."