We have a set of problems we are use to having. Day to day we have built up our strategies for dealing with these problems. Most people do what they can do to keep the same problems. the get attached. Because these problems our their problems.
Say the prospect comes for them to do something to get into a different situation. The first thing they do is get excited about having non of their current problems. This gets followed up not to long after with a list of new problems that can come with these changes. Which seem more daunting than current problems. So people revert to doing nothing and make no changes.
seemingly bigger problems can be scary.. and success can bring these types of problems.