The title is misleading. They didn't cap it, they just declared that if you are spending more than that, you have to be able to explain what you're spending it on and why, giving it a business reason and a project to associate the costs to, which I expect almost all Claude users at Accenture probably can. This is simply an accounting change, not a company-wide shutdown of Claude.
Heavy use remains possible, but it now needs a budget owner.