Why are enterprises so slow?

Simple. People in Enterprises with any decision making authority at all have comfortable lifestyles and earn a lot of money. Job #1 for these people is keep the cash and perks flowing. What's the benefit to them in changing anything, compared to the risk ? So do nothing !

Add to that in many cases, the only people with authority to take decisions are close to retirement. Something they don't want to jeopardize !