I'm very sympathetic to that line of argument, I'm no fan of capitalism, but choosing the default settings for something like Slack (whether you are selling it

I'm very sympathetic to that line of argument, I'm no fan of capitalism, but choosing the default settings for something like Slack (whether you are selling it in order to make a profit or not) appears to me to be a tradeoff between making it immediately useful, and obvious to non-nerds why it is useful, and being less attention-grabbing when your team gets a bit more unwieldy. I've no doubt there's more they could do and more care they could take, but Slack do publicise the customisations you can make. (In an ideal world of course we'd be using a chat system that has a great user experience, is based on open standards, _and_ is somehow easy to deploy... but within our current economic system that is clearly a tricky one.)