Pros
Well known brands. Global presence. What you do or how well you do it are only important at entry level. Beyond that you have to know the right people who really need to like you. That trumps everything. Once the right people like you, they will make sure you get all the credit for the great work done by others. This is why you don't have to worry about your needing to perform at an excellent level. What matters is who gets credit for that excellent performance. As long as you get the credit, why do you need to worry yourself about who actually did perform excellently. Never say anything but "Yes" to your masters so they continue to keep giving you credit for all that great performance of others. Now you are protected for life - and that is a beautiful thing!
Cons
Need lots of help making the right acquisitions. They spend millions of man hours analyzing companies to buy and you would think that that much brain power should result in better than 50% odds of making a good acquisition. But then you would be wrong.