Just as the FTC’s review of Amazon’s $8.5 billion acquisition of MGM looks likely to be thrown out before it has even properly begun, a US federal judge has just handed Facebook an early birthday and Christmas present all in one after ruling there is legal insufficiency to force the social media giant to sell WhatsApp and Instagram. The ruling in Facebook’s favor and against the FTC’s antitrust case is a milestone moment for big tech and a major blow for the many opponents committing their lives to breaking up US monopolies. The palpable sighs of relief from Apple, Amazon and Google collectively pushed Facebook’s share price up by 4% following the ruling – taking its market valuation to over…