Things to think about: If it is a feature, not a product, that would be a warning sign. If the bulk of what the incumbents have already radically increases th

Things to think about: If it is a feature, not a product, that would be a warning sign. If the bulk of what the incumbents have already radically increases the value of the product, it will be harder to compete. As an example, kiko had calendaring, but google held higher ground with a massive user base and large critical mass of related functionality in other apps. You have to weigh who the competitors are also. Do they buy, or invent technology? Are they vigorous (startups, or google) or slow and lethargic.