A prime example of this is the response Slack gave when Microsoft launched Teams. It was a direct copy-cat and they didn't throw a temper tantrum. They welcomed Microsoft into the space and saw it as validation of their product.
I’m seeing people conclude a lot more about Plaid from the CEO’s outburst than from Stripe’s announcement. If a competitor throws into your ring and your first move is to call foul on technicalities, it suggests you don’t think you can win on merit alone.
https://www.cnbc.com/2020/07/22/slack-accuses-microsoft-of-a...
IMO, their welcoming of competition, on an even playing field, only strengthens their request that Microsoft compete fairly.