A big company is typically sitting on a stable formula for printing money. Why should they change? (Because the world changes and that formula isn't perfectly stable, but the problem is to get them to know that.)
But that's how companies go out of business. They kill all the calves that compete for grass with the cash cow, and when the cash cow finally dies, they are left with no cow at all.
The odds are 100:1 that they aren't truly intent to change any of their ways.
The people who work at that kind of company pick them for status and/or security, not innovation and change.