They haven't though. There's a long term plan here, and the goal is power and wealth. Short term moves that appear irrational turn out to be rational (from a greed perspective) when you factor in other considerations, like: Use their own AGI to create every software product on Earth and swallow the worlds economy. And we're kindly feeding their systems our codebases, IP and business decision-making so they can do exactly that.
Not a single thing Anthropic has done has been altruistic, and it never will be. It's all smoke and mirrors for the end goal.