Some advantages are discovered only after the expected advantage disappears.

The advantage you expected can be blocking the discovery of others, since as long as it works nobody looks further. Its disappearance forces a search, and the alternatives found that way are sometimes better and often more durable, because they were reasoned rather than inherited.

When something you counted on falls away, spend real effort looking for what else you have. That search often turns up capabilities that were always there and never needed.