> I think the opposite, MCP is destined to fail for the exact same reason the semantic web failed, nobody makes money when things aren't locked down.

I think this is right. MCP resembles robots.txt evolved into some higher lifeform, but it's still very much "describe your resources for us to exploit them".

The reason the previous agent wave died (it was a Java thing in the 90s) was eventually everyone realized they couldn't trust their code once it was running on a machine it's supposed to be negotiating with. Fundamentally there is an information assymetry problem between interacting agents, entirely by design. Take that away and huge swathes of society will stop functioning.