How are you so sure that big corporations will also keep doing code reviews, QA testing, planning. At the current moment, they are laying off a large portion of their workforce, forcing devs to take more and more ownership and even expecting devs to assume the QA testing role. I dont think any software is trustable anymore.
It's all about responsibility. If I pay a company for functional software and it doesn't function, that's on them.
I expect a much greater emphasis on contractual performance and liability now that the customer has even less reason to trust that a vendor is doing the right thing.