One issue there I think is that Notion has had a number of investment rounds, according to crunchbase [0] they've gained $343.2M that way; that plus paying customers means they have a lot of money to burn. And investors don't like it when a company just sits on that money, they want results, they want to see growth, they want cool demos of cool new features or products.

I mean you can rebuild the essence of what Notion is with less than $1M. They don't need that money to build more features; I'm convinced that writing the code is the cheapest part of product development these days, despite developers earning five figure sums + bonuses + stock options + $15 / serving premade fruit smoothies from a squeezed bag.

[0] https://www.crunchbase.com/organization/notion-so/company_fi...