Some of my friends even got their visa, have liquidated all of their assets and have resigned from their current position! Such a shame to rescind suddenly long

Some of my friends even got their visa, have liquidated all of their assets and have resigned from their current position! Such a shame to rescind suddenly long after signing the offer. The funny thing is that I got recruited at FAANG with my original citizenship without any problem! FAANGs are much more strict when it comes to these issues. I don't understand this thing with Booking, which is not even a US-based company, at all.