It comes down to multiple factors but this article covers them well. https://www.tlnetworx.com/blogs/news/single-mode-vs-multimode-fiber-whats-the-difference h

It comes down to multiple factors but this article covers them well. https://www.tlnetworx.com/blogs/news/single-mode-vs-multimode-fiber-whats-the-difference https://www.tlnetworx.com/blogs/news/single-mode-vs-multimod... And to be clear, there will be hacks that scale MMF a bit, but it’s not really “infinitely” scalable due to relatively poor attenuation and light mode. Keep in mind, there isn’t one MMF spec, there’s many: eg. OM1 through OM4