What's more, the heyday of this kind of adversarial interop was also the heyday of disenshittification, the era in which any anti-feature installed by your existing vendor could be countered by a disenshittifying patch from a new one:
https://www.eff.org/deeplinks/2019/06/adversarial-interoperability-reviving-elegant-weapon-more-civilized-age-slay
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