I don't know what up with people these days. There seems to be a trend people are building heroku clones. Heroku is more than buildpack and dynos. Just because you have a github integration does not mean you do not have the right to call yourself a heroku alternative. Whole point of heroku is getting started without any setup. Now, If I have to acquire a VM, setup the infrastructure and then setup one these "alternatives", the onus is on me. I am responsible for 80% of the task heroku does. At that point, I would rather own it 100%. There is lot of stuff that goes on behind the scene goes into Heroku or Netlify. Managed Kubernetes with a PaaS experience comes very close of heroku alternative however, why would you switch to something like that when you are content with Heroku. Kubernetes setup will become a beast in itself.
I think heroku's alternative business plan should be suing all the companies/people calling themselves publicly calling themselves heroku alternative or a better heroku and delivering subpar projects.