This may be true but the printer can print things that you wouldn't be able to with the Bridgeport.I saw a demo a year ago of a very very fast 3d printer. I was blown away. Honestly, the one we have at work, I could take a block of aluminum and a Bridgeport and build stuff faster than it can. I am not a machinist BTW.
I can't wait for a sub $1500 fast (at least three times as fast as now) 3D printer.
We had one at my last job. The demo in the software was chess pieces. Our engineer took that software and built on it. So if you made the castle and looked inside the tiny door, it had tools that we made at work inside it. It had the staircase going up... Unbelievable detail inside that no way you could actually machine it.
This is why we have 3d printers, not for speed but for the unmachineable one piece parts that otherwise would have to be done as 2 or 3 parts then put together.
The detail is a bonus and would take even more time machining by hand.