Why there's no point in making another Facebook, but every year I see new "trello" or "jira" getting funded and growing?
What's the secret sauce? How does it work?
I often don't see any major difference neither in the product, nor in marketing messages.
The todo/planning area really isn't satisfactorily filled by Office or Workspace, so there's room for competitors to jump in and play still. And it's a huge market not currently filled by one of the big product suites there.
Of course, the downside is that as soon as Microsoft clones your product as part of Office, your business is dead. Calendly and such set a whole new trend of meeting scheduling behavior, and now Microsoft and Google both built the functionality directly into their platforms.
So you can build a SAAS TODO app and have one killer feature thats useful for 1-1000 or 10,000 paying customers, and survive on monthly subscriptions if you manage to keep churn low.
And this can happen in a niche segment or generally just survive off of a few evangelists buying licenses for their company to use X tool.
TODO apps are probably never going to be a $billion app but can reach a few million in valuation. But with an ocean of customers and competition, many competing apps can survive and meet a niche.
For example we used X small startup app for a few years until we needed Y companies feature, so we moved to Y company instead and it was fairly painless of a transition for <100 users and our simple project/task management requirements.
I find the categories I often make become static and overwhelming and would love a process that relabels them for me.