If you believe that your project can solve your consumer's problem then your project needs nothing but a good ad campaign.
It is very important that it can help the people for the future and help resolve some of the pain points which people are facing. If this happens with the good team and integrity they can easily capture the market and project can become successful.
Agreed, though on the borderless scale every project is developing, when it comes to mass adoption a good team with integrity may still lose to marketing by deep pockets. So be ready to pivot. This is a fast evolving sector; if the problem you were initially targeting has become an ocean of similar and effective projects, just focus on the next problem.