>Just year ago, client told me to delete integration tests, because "they ran too long"!
Why are you surprised customers don't like spending money on the items that don't add business value. Add to that QA, documentation, security audits, etc.
They want to ship stuff that brings in customers and revenue day one, everything else is a cost.
> integration tests, QA etc ... the items that don't add business value
They absolutely do add value / prevent loss, but you need some understanding in order to see that. Not seeing it is a marker of not understanding.