I have always wondered what would happen if someone had to invent spreadsheets from scratch, today.

Would conditional formatting and pivot tables get removed, because only 1% of users use them?

Would they feel supporting column, bar, line, area, pie and X/Y charts was just too complicated? That being able to customise the chart styles and colour schemes was just going to confuse users?

Would they think obscure jargon like 'vlookup' was too confusing, and difficult to localise internationally? Would they think formulas were too complicated to ever be a mass-market feature, as well as too difficult to input on mobile?

Would they discover 80% of office suite users don't use the spreadsheet beyond shopping lists, and replace it with a shopping list tool?

My theory is the modern software industry couldn't produce such a product. I don't think I've seen the industry produce a mass market product that requires a comparable level of user expertise in 20 years.