That's a big question but let me start with a prediction: Notion is a fantastic product that will take off more than Evernote. The reason Evernote became so po

That's a big question but let me start with a prediction: Notion is a fantastic product that will take off more than Evernote. The reason Evernote became so popular is that they build a great product for the time. What Evernote was capable of 10 years ago (rich editing of HTML, storing PDFs, search across notes) was unique and very hard to do. Additionally they quickly adopted their product to mobile explosion, made iOS and Android apps. The reason they are loosing ground is because what they do is no longer so hard to replicate and they software stagnated and even got worse (my personal opinion of e.g. their redesign of web UI). Notion showed what a note taking application built with modern technologies can be. The model (nested pages vs. flat collection of notes in Evernote) is better and they are more ambitious (see e.g. table integration). Notion is just getting started while I can't name one important improvement in Evernote in last 5 years.