I think Garmin is a really good example of a company that benefits from Apple making the market so much bigger. I had an Apple Watch, got into running a lot, and eventually found the Watch too limiting (bad heart rate measurement, touch only UI were my main issues). I probably wouldn't have ended up a Garmin customer if I'd never got an Apple Watch though.
Same here, just replace Apple with Fitbit. I had probably six Fitbits over the years and made the jump to Garmin last year. It's an amazingly better experience.