I've been part of a project that by the time was called "The most expensive IT project on the planet" and it was planned, run, build and supported by outsourced resources.

I can't stress this enough, this is a mistake, having your management/architecture teams from outsourced companies is just stupid. Nobody is responsible for anything they have no risk at all, it's the best job on earth.

You see those guys come, change everything to their management/architecture style, manage it like they own the company making reckless decisions and before the boat hits the rock they jump ship preferably to join the competitor in a similar project (because they copy each other), because now they have experience and know-how... This cycle is still going on and I know people making a living from this, some are completely clueless but can successfully switch jobs because "They were part of XXXX team in YYYY company" that nobody knows was a complete failure yet.

They still have not finished it ( 2 years after ) all personal from the initial setup are gone, all fault of course is on them now, so new guys can continue to make reckless calls that will probably cost billions of dollars and they will receive nothing in the end.

This is a terrible waste of resources and it's the Cancer to business nowadays.