If I'm not buying blockspace when I'm buying bitcoin, then what the hell am I buying? You can't charge rent on something you've already sold. That's not how business works. That's how the State works.
"Which is better - to be ruled by one tyrant three thousand miles away or by three thousand tyrants one mile away?" ~ Mather Byles
I dunno, Mather. Looks like the same shitty deal to me.
How can you possibly equate buying bitcoin with buying block space

How's that supposed to work? How many "blockspace" do I get for 1 bitcoin?
Easy. 1/21,000,000th of the whole chain. I answered your question, now you answer mine. If I'm not buying space on the blockchain when I'm buying bitcoin, what am I buying?
You are buying space on the ledger, not the block. You need to pay to move these bitcoins to a different address on the ledger.
So for 1 bitcoin I get 1/21,000,000th of the whole chain? Are you for real? Were you hit over the head with something?