That $5k subscription is already deeply discounted by debt funding. Anthropic is losing money on that account. So the bet is this free lunch will continue indefinitely and prices are gonna drop 10x on top of that? We'll see!
Put another way, someone else is paying that 115k difference, and it's not out of the goodness of their hearts. Once they capture market share, capitalists gonna capitalize. For now, investors seem happy to pump money into the bubble without seeing returns, but that will not last forever.