What even is a "blockchain," not in the context of something like bitcoin? How does a blockchain even work within a single organization? However it may or may not work, the dynamics involved would seem to make it qualitatively different from something like a bitcoin blockchain.

So you're asking for a comparison between something that does exist and something that doesn't. And in fact something that can never exist, if we are going to stick to the convention of treating names as more or less unique identifiers of a certain set of characteristics.