Because even regular air assets (especially drones) would invalidate the pretense of mech combat as king of the battlefield and make it instead a liability. Let alone orbital bombardment which can invalidate the first principles of the entire IP.
That's why it's severely limited.
Best to just roll with it.![]()
Actually I recall from the lore when I started and that was the 3025 era mention of an orbital bombardment happening somewhere using nukes described as such a horrible massacre, all the IS agreed never to use orbital bombardment again at least with nukes possibly anything thus why Mechs and other equipment still had their combat roles. The only power groups that would consider orbital bombardment would be some Periphery pirates that could not afford and / or acquire them.
EDIT - I currently cannot find mention of it, the earliest and other mentions are from the Clan Invasion onward regarding orbital bombardment.
These things do exist still:
[pic removed to avoid long quote]
"During the 1973 Yom Kippur War, the system was particularly effective against the Israeli Air Force. Israeli pilots attempting to fly low in order to avoid SA-6 missiles were often shot down by ZSU-23-4s"
- https://en.wikipedia.org/wiki/ZSU-23-4_Shilka
The 'Mech equivalent of course being the Rifleman and the JagerMech.
If we're talking space assets, I'm with you. But strictly air assets (even AeroSpace fighters in atmospheric flight, or drones) do not invalidate 'Mechs as Kings of the Battlefield.
Or even some non-Mech units made for anti-air use. The same company known for making anti-air Mechs like the 2 you mention also designed this anti-air beauty called the Partisan.
While not designed specifically for it, there is also the Pike that used similar weapons though of lesser quality. I still remember the night while as GM for our BT campaign, I put a Pike on the map and the player who had the Aerofighter character at the time piloting a VTOL screamed like no man should along with how 1 Pike proved so annoying to the players Mech forces they went from laughing at the Pike design to hating it.
Imagine how a Pike or Partisan would affect players of MechWarrior Online or HBS' BT under the rules they use.