> Heroku remains an actively supported, production-ready platform, with an emphasis on maintaining quality and operational excellence rather than introducing new features [1]

This sentence is what really seals the death for me. I used to be a big Heroku fan. And used them as late as 2023. But tbh it very quickly fell behind the capabilities and devex of products like Supabase and Vercel.

While I agree that it will probably stick around in zombie mode for another decade, if Salesforce doesn't want to improve the product, it will just slowly bleed users until the cost to maintain it is less than the revenue.

[1] https://www.heroku.com/blog/an-update-on-heroku/