In that case, go ahead and try to send one of your "Bitcoin2" or "Bitcoin3" to an exchange, a wallet or a merchant, and see if they accept it.  They won't.

If you create a new client which abides by different consensus rules to the reference client (currently Bitcoin Core) you are creating an entirely different currency.  It could be that you call your new currency "Bitcoin" and that it garners enough consensus to be regarded as "Bitcoin" by the majority, but even if that occurs, the supply of the original chain will stay consistent.

You clearly do not understand what forking software entails.