That makes sense to pay someone to perform that function privately and internally.
It’s been a disaster for Google to have that happen in public.
It’s been a disaster for Google to have that happen in public.
Importantly, Google offers great work conditions, access to their intellectual property and different evaluation criteria. Many prefer that and other benefits over the stresses of a proper academic career.
It's a very, very tricky thing to do to hire your own public critics, that has to be done very carefully and with a lot of parameters.