Comment by sturza

To raise is a signal of a combination - market identified as large enough to make it worth the risk, competitor analysis, go to market strategy, founder perceived capability, team, perceived ability to be better/faster at getting market share vs competitors. Clicks(upvotes, feedback etc) have no value in themselves. Founders have the job to make a sustainable business, but before they do they have to convince others they can - through some of the things i listed above. "Too niche" already implies too small market to make VCs care. Also PMF + people upvoting with their wallet or high growth could also be raising signals.

If you're looking for a general answer, i don't believe it exists.