But economies of scope, such as they exist, can be good for consumer welfare (unpopular as that is to discuss in current public forums).

Two chunks of overhead (IT, web app, mobile app, finance, HR, etc.) instead of one can be bad for consumers too.

But yeah, flexing pricing increases to gobble up consumer welfare is what the FTC is supposed to rally against, and, while services expand their markets aren't that different.

EDIT: Wow, people really hate this comment! I'm not being normative here. Economies of scope are the thing that any acquiring companies with any reasonable market share will argue for their case, its textbook economics and what the FTC is trained for.