Yes! We, too, happily used Discord for years in our small company - it was absolutely amazing and I also wonder why they don't have a version for companies - in my mind it easily beats Teams in nearly any factor that's important to us - though admittedly we're not a typical Microsoft-using enterprise.

(BTW we ended up writing our own tool instead and use that now => https://www.inetsoftware.de/products/cowork)