Buying Slack requires Slack to be interested in selling themselves.

You're misinterpreting him. "Buy" here is purchasing the product, as a typical customer.

You're assuming:

* that Slack was for sale too

* that Dropbox wanted the app, rather than the people who made the app

Slack is out for a lot of groups that don't particularly want internal, private communications routed through a third-party.

GOTO 10

I don't understand why you are being downvoted for legitimate questions.

Same. It's kind of sad. Apparently questioning the business reason behind decisions isn't appreciated. I personally find them interesting.

I mean the slack product!

BradRuderman you are conflating two different things that are not necessarily related:

(1) How Dropbox chooses to satisfy internal requirements/demand for a group chat solution

(2) Why/whether Dropbox should have acquired/acqhired the Zulip team

Yea my point of the comment was (1). I didn't even know it was an acquisition. I am shutting up to prevent loosing any more minimal reputation.