My company quickly realized that outsourcing to an offshore Indian company was a mistake. We tried giving them new projects, but it was useless. We still use them, but only for very simple support work. My project was outsourced to them for support. The transition of our mature project to them took about a year. They wanted to replace our 10-12 person team with about 19 of their people. They also needed some of the people onshore due to regulations. So much for cost savings. And as soon as someone got good, they left the team/company because they could get a better job anywhere else.

My company also outsourced onshore to another Indian company to modernize an area of our business (same area as rhe above example). It's a mess. They're behind schedule by years. They promised they had an ML system to handle this type of business case, but it's not working. They're also telling people to only record 40 hours on their time sheet even if they're working 50-60 hours. They've had so many people leave that they're throwing money at the remaining expert people to stay.