Which creates a potential dilemma for the pilot because it is not a limitation. So wise companies then create their own limits and publish them for all to respect and obey. They may use the demonstrated figure as the upper limit on a dry runway and will usually set lower limits for wet and slippery runways. The unwise leave it open and may even suggest that it could be exceeded - which technically it can because it is not a limitation. But of course while they may be unwise in dispensing such advice, they are usually wise enough to not put anything in writing.
I recall the dry crosswind 'demonstration' for the DC3 was 17 knots but at a couple of airports we regularly exceeded it and got away with it. I can now see that had I NOT got away with it it would have been: "Your Honour, how did Capt Mach arrive at the conclusion that he was better than the test pilot?" And would the Insurers pay? Hell, no.