> I use my bicycle far less than 5% of the time, so what does that say about bicycles from a global allocation perspective, and why should that change anything?

If you're looking for a transportation analogy, I think a far better analogy would be if there was an incredible shortage of rubber for vehicle tires, with possible allocations of each tire including either a bus that would be used ~24x7 for a large number of users simultaneously, or for a car that would be used by 1 person a relatively small percent of the time. And I understand that people would disagree about desired outcomes there as well. Also, what do you mean by 'why should that change anything?' - is your question about why someone might say allocating limited resources to a use that is used by large numbers of users simultaneously 24x7 is different than allocating the resource to something to be used 5% of the time by a single user?

(Also, how would the bike analogy work - what's the shortage of and what's the alternate use of the constrained item would serve a large number of users simultaneously ~24x7 if it wasn't instead being used for your bike for 1 person ~5% of the time in the bike example?)