I just assume that they realized that they can split the offering, and to charge for the top tier more. (Yes, even more.)
If Claude Code can replace an engineer, it should cost just a bit less than an engineer, not half as much.
Remember there are no moats in this industry - if anything one company might have a 2 month lead, sometimes. We've also noticed that companies paying OpenAI may swiftly shift to paying Google or Anthropic in a heartbeat.
That means the pricing is going to be competitive. You may still get your wish though, but instead of the price of an engineer remaining the same, it will cut itself down by 95%.
I don't know about you, but I benefit so much from using Claude at work that I would gladly pay $80,000-$120,000 per year to keep using it.
But then you pay for the less outrageously subsidized rates of API instead of the a bit less incredibly generous prices of the subscription.