Bottom line: Cost versus ROI. Too expensive for the few who would see the need or advantage and - more importantly - be willing to spend the extra money. Marketing will/would never approve it.
For example: I have a very nice Mosfet T/R switch that I use in a commercial application. It handles 500 watts, has a frequency range of 2 to 60 MHz. and costs a staggering $995. 73s Tom K6TGT/AAR9BD There are several alternative RF designs for 100W transceiver applications which enable solid state RX/TX switching without the need for the old 100W PIN diode brute-force 50 ohm
