Most developers have only one vision which is making money that is why many coins doesn't grow and they failed because they didn't see the vision ahead.
As an investor, we should always check the motivation of the developers and we can see that if they are not dedicated to the fulfillment of their roadmap and stop communicating with the community, in the first place investors invest because of what they've seen on the roadmap and whitepaper, this is where the potential starts but if the developers are not motivated investors will dump the coin and the project becomes a failure.