The cost of keeping a carbon-based Eliezer alive is negative so long as his productivity exceeds the cost of giving him food to eat and a place to sleep. The existence of uploaded Eliezers may drive up the price of resources (or drive down the price of Elizezer-thought) until that condition becomes false, but that’s not going to happen with the first copy. Thanks to comparative advantage it may not happen for a long time afterward either; the resources humans use and the resources computers use aren’t perfectly exchangable.
The cost of keeping a carbon-based Eliezer alive is negative so long as his productivity exceeds the cost of giving him food to eat and a place to sleep. The existence of uploaded Eliezers may drive up the price of resources (or drive down the price of Elizezer-thought) until that condition becomes false, but that’s not going to happen with the first copy. Thanks to comparative advantage it may not happen for a long time afterward either; the resources humans use and the resources computers use aren’t perfectly exchangable.