The Bitcoin blockchain is not bad at holding money, great big gobs of capital, and is very bad at everything else. (except maybe timestamping/notarisation)
Other blockchains can't even hold capital, and are very bad at everything else. Not enough proof of work.
Which is why people who value their capital in fiat are so frightened that they try to subvert Bitcoin not least with these long-repudiated scams of 'blockchain-not-bitcoin'.
None of these corporations are getting out of the 'ice age' unless they adopt Bitcoin. Not 'blockchain'.
Entertaining anything else lends them some hope, which is unrealistic and unkind.
on blockchain tech
It's a meaningless fad.
Agreed. I've heard very few worthwhile use-cases for "blockchain tech". When companies say "blockchain", they usually mean "broadcast everything to everyone and expect them to store it", which doesn't scale and isn't a new concept anyway. The real application of blockchains - decentralized timestamping - can be very useful, but it's not a holy grail.
It reminds me of this (replace "cloud" with "blockchain"):
https://www.youtube.com/watch?v=9ntPxdWAWq8Nothing has changed because Pooh has embraced blockchain. That is still just a way to accumulate more bitcoin cheaply.