It's an excellent question.
To my understanding, there's no data on this; there's no study on this. But you point to something that is really important when it comes to digital technologies, that the investment itself is just one component of the broad equation, because it also takes resources to implement these technologies and to keep investing and maintaining those operations.
One example of that is a website. It's one thing to have a sophisticated website to start with—let's say a firm hires a consultant to help them with the development of a website—but if they don't maintain the information on it and keep it up to date, then it will become out of date fairly quickly, and people will lose interest.