OK, here is an interesting question for you all. I have a scope, and I connect a N2795A 1GHz active probe to it, and it just works. I can take that probe, plug it into another oscilloscope, and that works as well, none of them has licenses for the probe. I can take any number of active probes from the same mfg. and they just work after plugging in.
Or I can buy a R&S NRX, RF power meter, and connect any number of RF probes to it. No license necessary.
Or take a VNA, and connect any number of active calibration standards to it. It downloads the data, does the clicky-click inside with the relays, and calibrates the VNA (*artist depiction of VNA calibration).
Yet if I want an oscilloscope to to use an external active or passive logic analyzer module, I need a license for it.