Can you define "many"? 100k reports? 10k reports? 1k reports? 150 reports? 15 reports? What's the incidence? What's the rate compared to the public and private sectors? What's the rate for defense contractors? Are we talking social sciences, hard sciences, health sciences? What's the field?
"many" is just intellectually lazy here. The reality is you read a few stories in the media and now have written off the entire model of research funding.
Failures (ethical or otherwise) are an everyday occurrence at scale, and the US research and funding model is at a scale unparalleled in the world.