95 years is ridiculous. 25 would be more appropriate.
It depends upon the type of property. Consider a trademark, like the NBC peacock, a gas station logo, or MacDonald's golden arches, if it was OK to steal that, customers would be confused and the originator could even potentially be sued by someone harmed using the bogus bait. Trademarks are property that is continually in use and should be considered private property for as long as the entity operates. Similarly, a song long associated with a particular individual can function the same way, such as Andy Williams singing "Moon River" or Dean Martin singing "Everybody Loves Somebody Sometime." Personally, such latter types of property should be good for 25 years or the life of the owner as long as it is still in use, whichever is greater. OTOH, consider my environmental business method patent, it will be many years before even the first business gets off the ground in this environment. Is that my fault?
So my point is that the life of civic protection for private intellectual property SHOULD depend upon the type and use of the property. Blanket statements with bright lines may get a conversation started, but to discount the claim as legitimate is to blow off the benefit from investment risk cited at the beginning of the article.