The reason this doesn't work is because of the pressure phone carriers have gotten about reducing the amount of spam phone calls and SMS (from Congress, state g

The reason this doesn't work is because of the pressure phone carriers have gotten about reducing the amount of spam phone calls and SMS (from Congress, state governments and regulatory bodies like the FCC). These arbitrary filters on consumer level plans are typically about blocking spam from spoofed numbers and non-compliant businesses. If you think about it, its EXACTLY how email works today. You _can_ try to send millions of emails per a second from your gmail account, but a) your emails will likely be caught by spam filters due to the high volume and b)gmail will notice suspicious activity and shut your account down.