My nightmare scenario is that I build my own crucial database of information partially derived from a search API... and then later get into legal trouble which forces me to delete that data, which is now intermingled with other information I've collected.
Yes - it's important to me that I understand the source of the data I've collected and if that source results in restrictions on what I can do with that data.
Especially when I'm building databases that I want other organizations to be able to use.
Fun fact: many geocoding APIs have restrictions on what you can do with the data you get back from that geocoder - including how long you can store it and whether you are allowed to re-syndicate to other people. That's one of the reasons I like OpenCage: https://opencagedata.com/guides/how-to-compare-and-test-geoc...