That depends. A good example of this expertise coupled with loyalty to "current position" rather than "past connections" has been former EU commissioner Neelie Kroes. Better known as the woman who put the record fine on Microsoft.
She was a former lobbyist for big companies, and there were significant fears that she would kowtow to big industries as a result. The opposite came to be - she became big industries' worst nightmare. Someone who knows how the system works because she is an insider, and someone who has the political power and will to take it apart when it threatened to monopolize some parts of the market and damage the free market within EU.
Which brings me to my point. These people tend to be selfish and career oriented. So while revolving door system does suggest ties to former interests, one also has to remember that most of these people are social climbers. Once they get a higher position if their interests demand it they will have few to no qualms of stepping on the faces of their former comrades.
Wheeler is currently a high level government bureaucrat, standing above his peers in private sector. So when these peers get on his turf, he has shown to have few qualms in stepping on them.
Best part is that this particular crowd understands self interest like this and is unlikely to hold it against people like Wheeler after they move on to their next post. This is because they trust self-interest and see themselves acting the same way if they were in his place.