-People who bought in unusually late (after August 1st) do not own Bitcoin Cash.
-Some people decided to sell or otherwise use their Bitcoin Cash.
Why does it matter if bitcoin cash over takes bitcoin, if everyone who owns bitcoin got free bitcoin cash coins? If bitcouin cash will be valued more, you will still have the money.
It is under centralized control
This is false. Whether or not you believe that max block size increases could potentially
lead to centralised control is irrelevant.
Bitcoin Cash's blockchain is actually smaller than Bitcoin's, because it has processed drastically fewer transactions than Bitcoin since the time of the fork. The notion that it's under "centralised control" is ridiculous. The closest thing you could suggest is that a select group of individuals have a lot of power over most people deciding to use it.