MBAs instead of promote-from-within. Bringing along egotistical bean-counter superiority with typically vastly inferior performance. Seeing this trend in big tech has me very bearish - the non-tech MBAs just can't execute on long-term big bets that require the deep understanding/cross-cutting coordination that comes with career insiders.
Is the problem of outside MBAs their lack of deep understanding? Others here have argued that the promotion of outsiders erodes loyalty and passion of the workforce towards their jobs.
I could imagine good outsiders who have the skills for long-term big bets are quite common. But then the erosion of the community inside the company could still foil such bets.
As an aside, this alternative narrative seems more palatable to MBAs then your version. Hence it might be more easily accepted.