It always paid to train 'your people'. Even if training looks expensive.
And there was always a war for recruiting talented people.
I ask myself why a survey makes that an idea (or better a concept) that has been alive for so many years, become news?

Outsourcing can get savings and hence for a better bottom line, but only if there is scale factor big enough, and if we can offshore tasks with well defined borders.

Certainly for trainig you will also need to know where the company is going to, and a good retention policy.