so in truth only a very few get to benefit from it just like most things that have value in this world.
In terms of "benefits" yes, because only less is used, but in terms of value it will be profitable. Just imagine if suddenly bitcoin which has been silent for years starts to move, at least it will cause a negative market reaction.
But no one knows whether a large percentage of it has really lost access, in fact the method of hoarding bitcoins has also developed into various forms of patterns. The term HODLing has been introduced since 2013 ago btw.