Why Don't Wired Logic Gates Produce Physical Second-Level Gates?

[themagiciant95]

Hi, why a wired-logic gate does not produce a physical second-level gate ? Is it due to the velocity of the components that create the "wired-connection" ?
Thanks

 

[Baluncore]

Is it due to the velocity of the components that create the "wired-connection" ?

Partly, but mainly to reduce cost.
When transistors were expensive, several collectors were wired together. If anyone collector sank current the wire was pulled to a low voltage, making the AND function. The next transistor inverted the signal which made the NAND function.
https://en.wikipedia.org/wiki/Wired_logic_connection

That created the interesting situation where gates needed only one input, but had many identical outputs.
https://en.wikipedia.org/wiki/Integrated_injection_logic

 

[Svein]

The wired-and function are also used in some communication schemes where the outputs are far apart. In the original Ethernet the signal was put onto the wire using a wired-or connection. The signal receiver continuously monitored the signal on the wire and if the signal on the wire was different from the expected value, the conclusion was that more than one transmitter tried to send at the same time - a collision.

A similar mechanism is used in CAN, but not for collision detection but collision avoidance.