AppStream Concurrent Users for SaaS Application/Service Quota Issue

Hello,

We plan to use AppStream 2.0 to offer our Windows based application in a streaming context. We have everything setup and running in AppStream at present. We've been using an Elastic Fleet of type stream.standard.medium for reasons I will describe below. There is only one application that we are streaming, in App view.

Our use case is unique. We can't know, at any given time, the exact number of streaming instances (i.e., unique users connected to the service) there will be at one time. We have yet to deploy publicly, as we are still testing. We use the AWS API createStreamingURL action to deliver the fleet, stack, app, and userID then receive the streaming URL. This works nicely.

According to the service quotas and follow ups with AWS, it seems the maximum number of concurrent users for an Elastic Fleet of stream.standard.medium type is 10. Even though it says adjustable, AWS support said it is locked at 10.

I see that with an always on or on demand fleet, the max concurrency is 50, also with the option to request an increase (but I haven't tried this yet).

My question is: There are many resources online that describe Saas use cases of AppStream (including many written by AWS themselves) that makes it seem that AppStream is a good option for Saas (given our Windows based application). They also have documentation to describe how small companies and educational institutions can use AppStream to deploy their apps or desktops. In any of these cases, 10 instances (or even 50) limit is incompatible with a popular Saas. Our market will primarily be higher education students and researchers. At any given moment, we could see 50 users wanting to access our AppStream app simultaneously, or it could be 100. Or it could be 25, or it could be 250.

How have others done this? I cannot seem to get any real answers - everything points back to service quotas and asking for increases. Is this to push people away from Elastic Fleets to the more expensive Always on or On Demand fleet options? Even then, with scaling policies enforced, can I make Appstream work for my use case of an unknown number of users at various times throughout the day, from 5 to 150 users at any given moment? It's unclear to me how this works, but given the amount I have read online about successful Saas application using AppStream, it must be possible. Any advice would be greatly appreciated.