Welcoming competition is different from approving of a competitor abusing their platform to sell only their own products. Note that I am not saying this is what Microsoft is doing, just saying that this is what Slack claims to believe they are doing.
IMO, their welcoming of competition, on an even playing field, only strengthens their request that Microsoft compete fairly.
IMO, their welcoming of competition, on an even playing field, only strengthens their request that Microsoft compete fairly.