It's a reasonable case to be made that the wide adoption of Slack despite its issues contributes to their perceived valuation. This tells me that:
1. Slack has tapped into an energetic market
2. People will use the product even if it sucks, or can be compelled to use it by their company's management and IT.
3. There's money on the table for anyone who can build Slack-like services at a better level of quality.
There's also a spiritual similarity in this gripe to the gripe about Apple being a $1T company despite their descent into software and dongle hell—people are buying it despite its flaws because the marketing and the appeal is overwhelming.
1. Slack has tapped into an energetic market 2. People will use the product even if it sucks, or can be compelled to use it by their company's management and IT. 3. There's money on the table for anyone who can build Slack-like services at a better level of quality.
There's also a spiritual similarity in this gripe to the gripe about Apple being a $1T company despite their descent into software and dongle hell—people are buying it despite its flaws because the marketing and the appeal is overwhelming.