Could you clarify exactly what you think is an illegal tie-in? Because it seems like what you are upset about is literally the opposite -- Anthropic unbundling their offerings so you aren't required to buy the ability to offer third party access when you purchase the ability to use Claude code and their other models. Unless I really misunderstand you, your complaint is literally thaf

The laws prohibiting tie-ins don't make it illegal to sell two products that work well together. That's literally what the laws are designed to make you do -- seperate products into seperate pieces. The problem tie-in laws were designed to combat was situations like Microsoft making a popular OS then making a mediocre spreadsheet program and pushing the cost of that spreadsheet program into the cost of buying the OS. That way consumers would go "well it's expensive but I get excel with it so it's ok" and even if someone else made a slightly better spreadsheet they didn't have the chance to convince users because they had to buy it all as one package.

Anthropic would be doing something much closer to that if they did what you wanted. They'd be saying: hey we have this neat Claude code thing you all want to use but you can't buy that without also purchasing third party access. Now some company offering a cheaper/better third party usage product doesn't get the chance to convince you because anthropic forced you to buy that just to get claude code.

Ultimately this change unbundled products the opposite of a tie-in. What is upsetting about it is that it no longer feels to you like you are getting a good deal because you now have to fork over a bunch more cash to keep getting what you want. But that's not illegal, that's just not offering good value for money.