A general statement I made is mostly to refute that people invest exclusively when the data is clearly supporting that investment with guaranteed returns: basically, the fact that people will buy does not mean that they have guaranteed returns.

Some might be looking to capitalize early and exit quickly; some are creating demand because they have other drivers in their portfolio (eg. Nvidia or Micron); some might really believe in the company; and some might be gambling with their disposable investment money for their high-risk/high-gain part of portfolio.