I hope this paper makes some people realize that CMOS can go extremely fast.
"CMOS and SiGe Bipolar Circuits for High-Speed Applications"
by Werner Simburger, et. al., GAAS IC Symposium 2003.
Abstract—Recently, CMOS has been demonstrated to be a
viable technology for very-high-bit-rate broadband and wireless
communication systems up to 40Gb/s and 50 GHz. Advances in
device scaling and doping-profile optimization have also resulted
in SiGe bipolar transistors with impressive performance, including
cut-off frequencies of more than 200 GHz. This paper presents
advances in circuit design which fully exploit the high-speed
potential of a 0.13 µm CMOS technology up to 50GHz and of a
high-performance SiGe bipolar technology up to 110GHz operating
frequency. The combination of advanced circuit techniques
and a state-of-the-art fabrication-process technology results in
continuing the upward shift of the frequency limits.