Earlier quoted context omitted.
The background here is mostly that these big organizations feel threatened by Google, and issues like the legal/licensure restrictions behind using big open data projects like OpenStreetMap make it hard to commit to using those datasets. They're trying to stay competitive.
What's the licensure/legal restriction in using OpenStreetMap aside from including attribution?
Data sources that people commonly want to blend with mapping data have legal and regulatory restrictions with respect to privacy, data jurisdiction, acceptable use, statutory time limits, contract terms, etc. The OSM license terms are in conflict with legal and regulatory compliance requirements.