But it's not a support contract. It's a licence to use the software, isn't it? You can't reasonably revoke a lifetime licence-to-use; there's no cost to letting

But it's not a support contract. It's a licence to use the software, isn't it? You can't reasonably revoke a lifetime licence-to-use; there's no cost to letting people go on using it. There's also no marginal cost in allowing lifetime licensees to download updates.