Perplexity Goes Multiplayer, AI Token Budgets Arrive, and Stateless MCP

Three signals today that all point at the same underlying question: who controls AI resource consumption, and at what level of the stack? Perplexity just made Computer a multiplayer agentic OS. Atlassian is capping AI token spend per employee. And Simon Willison's stateless MCP work shows why the protocol's architecture choices matter more than most PMs realize.