> Facebook used data provided by the Israeli analytics firm Onavo to determine which other mobile apps were being downloaded and used by the public. It then used this knowledge to decide which apps to acquire or otherwise treat as a threat
Checking out your competition is pretty standard among all businesses, as is buying out the ones you can't beat.
> there was evidence that Facebook's refusal to share data with some apps caused them to fail
Sharing or not sharing data with another app is likewise not an unusual decision. FB is not a public utility - they can not work with other apps for any reason, or no reason at all. And this is a particularly ironic thing to point out, considering that the main thrust is complaining that they _did_ share data with other apps. So it's bad if they do share data, but also bad if they don't?