The biggest problem with DXC, and the thing that's led to the most layoffs and to the most clients leaving, is the endless focus on in quarter results. I know Wall St loves to see in quarter results announced, but to only focus on a 3-month window is really not the way to run a sustainable business.
Want to boost current quarter? Simple, lay off some staff - that gets costs down without hitting revenue in quarter. Of course, it hits revenue in the next quarter as you now have fewer staff to sell to clients, but that's easily fixed by laying off some more staff in the next quarter! And this cycle has repeated at DXC for several years.
Don't spend on training and development, because that reduces your in-quarter profit. The very training and development that's necessary to keep your teams relevant for future quarters. But, hey, as the teams no longer have relevant skills, DXC can lay them off too and boost the in-quarter results.
Short sighted Leadership by Mike v1.0 and Mike v2.0. There was a way back when Mike 2.0 took over, had he acted immediately to shift the focus of the company, but he didn't. He went for more of the same.
I don't think there's a way back now, too much damage has been done to DXC's reputation. A purple re-brand isn't going to fool anyone.