1) Excel just has a fucking ton of features, it's really hard to compete with a product that is responsible for at least $100 billion of Microsoft's value as a

1) Excel just has a fucking ton of features, it's really hard to compete with a product that is responsible for at least $100 billion of Microsoft's value as a company. Any competitor tries to convert Excel spreadsheets but is always missing one or two things. 2) There are a bajillion Excel documents out there that people need to interoperate with, but I think this is less important than (1) 3) Microsoft sells their products as part of a huge bundle, so any one Microsoft product is essentially "free" when compared to the alternatives. This is the toughest nut to crack. You make a better Excel. Well, OK. Your customer is already paying Microsoft $xx/user/month for Word, PowerPoint, Teams, Windows, Active Directory, etc, and that won't change if they stop using Excel. But now they gotta pay you... not a really attractive proposition for them.