I've been trying for 2 months and have a few tickets open. I got to talk to an account manger again yesterday and they are checking with their manager, I had the same conversation a month ago but it went nowhere. Still trying, will post update if I get anywhere and the process to get it.
I suspect because it's not "user facing" as such and not node / account locked because it runs as batch process they can't figure out how to fit it into the sales pitch so dumped it into enterprise for now until they figure it out. Hopefully no PHB decides it's not in keeping with the general mission statement and bins it because it's the main feature of designer and there's nothing competitor wise to move to really that's as fast and versatile.
If you have access to your old algorithmic account and had an indi subscription there you can get access to the last version you had before you transferred your account but it wont be the latest. Mines about a year out of date so need to run older python but unless you are after any of the new new features it works fine, I'm using sbsbaker rather than python but I tested the python when I started as I thought I might need it for current project and it still worked. There's linux version there as well.