Uhh..... you've been able to do that for a long time. Guidestar has been doing this for a least ten years. I was a prospect researcher who spent half my day just digging up free tax returns from orgs to figure out how much a prospect donated so we knew how much to ask them. I also ran one of the NPO'S guidestar pages. If you create an account you can read 990's. Here is Susan G Komen's: https://www.guidestar.org/profile/75-1835298