Your solution is: 1. move off to the competition who are offering a subpar service;

2. then wait until they eventually catch up in (how many years? who knows..);

3. then profit?

Heroku is around, because there is no other service that offers the ease and convenience. I looked at Fly.io and Render and they are nowhere close and mature to Heroku at the moment.

For example, here is Fly.io's "Solution" for Redis:

> Setting up Redis requires launching it as a separate app. ..

Or if you want something as commmon as Sidekiq.. have fun messing with configuraiton files: https://fly.io/docs/app-guides/multiple-processes/

Now let's compare this to the Heroku experience:

How to use Redis:

Step 1. Add a Redis addone

Step 2. There is no step 2.

How about Sidekiq?

Step 1. Add a worker

Step 2. Update your Procfile

Step 3. There is no step 3.

Fly.io tells me to "Just Use Bash"..

So while I kind of see where are you coming from, unfortunately all these alternatives fall short. Not to mention that Heroku has hundreds of integrations built-in.