How big tech got big -- Network effects vs. switching costs -- Copyright wars, cybercrime, terrorism, human trafficking and other gifts to Big Tech -- Interop : from computer science to the real world -- Standards and mandates : what's behind the shield of boringness? -- Adversarial interop : guerrilla warfare and reverse engineering -- Jam tomorrow : life after we seize the means of computation -- Jam today : how we'll get there -- What about privacy? -- What about harassment? -- What about algorithmic radicalization? -- What about child sexual abuse material, nonconsensual pornography and terrorist materials? -- What about warranties? -- What about poor countries? -- What about blockchain?