Spread spectrum methods are not magic, they do not manufacture new spectrum. As you get a larger number of simultaneous spread spectrum users the apparent "nois

Spread spectrum methods are not magic, they do not manufacture new spectrum. As you get a larger number of simultaneous spread spectrum users the apparent "noise floor" (actually other spread spectrum transmissions) becomes higher and higher until the achievable data rate approaches zero. This isn't to say that the use of spread spectrum methods doesn't have benefits, but it doesn't change the fundamental concepts. Bluetooth, for example, uses FHSS but will still suffer from contention in very noisy environments.