At the end of the day, It's a lot of investment to build an app native for macos, linux and windows. Plus the web. Plus CLI. Plus multiple native mobile platforms. If you can trade 75% of that out for a single "platform", then you can focus all your engineers on the same thing. More features, sooner, and available for everyone - no more 2nd class platforms.
Almost of the core applications that drive basically everything in my life, including Brave, 1Password, Inkdrop, VS Code, Email, Office Suite, Slack, Discord... are either directly in browser (Ex Gmail & Outlook.com), Electron or some similar "browser in a box" type solutions. Yes, I am unusual in that I work on Mac, Windows and Linux machines on a regular basis. However it's amazing that all my apps work the same everywhere I go.
You know what else is awesome about that? I can recommend those apps to everyone, regardless of what platform you're on. No more "Just use X? Oh you're on a mac... uh... sorry no idea". Ask me for help? Cool, works the same everywhere so I can help you.