Hello,
I think answer is given inside the link already :
"TCAM is much faster than RAM. However, it is not widely used in most electronics because it is expensive to build, consumes a lot of power and generates a high level of heat that must be dissipated.
TCAM is commonly found in networking equipment, such as high-performance routers and switches, to increase the speed of route look-up, packet classification, packet forwarding and access control list-based commands."