In my current job I was discussing with a C-person and they were expressing their worries about "Microsoft Cloud" taking cover of everything, and how 'we' could reverse that without crippling the business.. to which I answered that we are past the point of no return, and this is a dialogue that we should have had 3-4 years ago. But when this was discussed everybody was 'thrilled' to have a solution up and running in Y time at Z cost instead of alternatives with 3xY time and 3xZ cost.

That hindsight is always 2020 (semi-related - https://www.explainxkcd.com/wiki/index.php/875:_2009_Called)