Is there some ulterior motive behind W3Schools besides to teach people web stuff (and to maintain its own existence, which is no different than MDN)? I use MDN

Is there some ulterior motive behind W3Schools besides to teach people web stuff (and to maintain its own existence, which is no different than MDN)? I use MDN because Mozilla literally implements a browser, and I'm not the biggest fan of W3Schools, but this mostly just feels petty. Tons of people get valuable answers from both sites.