Change...
It’s something we all go through and/or experience in our lives. New jobs, new surroundings, incoming friends, outgoing friends... Change is constant and something no one can escape. It’s just a part of life.
In professional sports this holds true, and probably applies tenfold. Players, coaches/managers, executives, owners and even team locations... All of these things change over time, some more frequently than others.
The NBA as an organization is no different, and not only do its personnel change — such as the Commissioner, the Executive Vice President, Basketball Operations etc. — but its rules, regulations and event dates change too.