This collection of reader letters to the Guardian touches several live nerves in British public life, but the through-line is the relationship between concentrated power — corporate, political, financial — and the citizens navigating its effects. Prof Mark Doel of Sheffield writes in response to a prior article about Amazon's profiling practices, urging columnist Emma Beddington to boycott the platform entirely. His argument is straightforward: opting out of Amazon is both ethically potent and surprisingly easy, and your life will be richer without it. It's a consumer-sovereignty argument — the claim that individual exit from a monopoly platform constitutes meaningful resistance. Raj Parkash of London picks apart Robert Jenrick's attack on Kemi Badenoch as 'Kensington Kemi,' noting the irony that complaining about not finding Ottolenghi ingredients is stereotypically Guardian-reader behaviour, not Tory-voter behaviour. The observation is sharper than it looks: it exposes how political messaging often misidentifies its target demographic, projecting cultural anxieties onto the wrong audience. John Godfrey of London challenges the Guardian's editorial claim that Ed Davey is 'the most successful liberal parliamentary leader in a century,' pointing out that Nick Clegg led Liberal Democrats directly into government just over a decade ago. It's a factual correction that doubles as institutional memory — the tendency of political commentary to inflate present achievements by amnesia about recent history. Martin Essex of Lavenham asks why the UK cannot implement US-style global taxation on its citizens if billionaires are leaving, while Hanna Pennig of Forglen offers a blunter take: good riddance, and perhaps remaining citizens can build a fairer society. Both responses address the same structural question — whether capital flight is a crisis or an opportunity — from different angles. Taken together, the letters illuminate a recurring pattern in British public discourse: citizens identifying extraction mechanisms (corporate surveillance, political misdirection, tax avoidance) but disagreeing on the appropriate response. Doel's Amazon boycott and Pennig's farewell to billionaires share a conviction that exit by either party — consumer or capital — can be generative rather than destructive. The letters page itself functions as a low-friction democratic signal, though its structural power is negligible. These are opinions, not policy. The real question each letter implies but none resolves: what institutional mechanisms would convert widespread citizen frustration into durable systemic change?