Xbox is ending unlimited cloud gaming for many users by introducing monthly usage allowances in November, although the change is a monthly cap rather than a fixed limit on each individual session.
Xbox is imposing a time limit on cloud-gaming sessions.

Microsoft to impose time limits on Xbox cloud gaming subscribers as costs continue to climb
Source: cnbc.com
Key Evidence
Microsoft plans to introduce monthly cloud-gaming limits for Game Pass subscribers starting in November.
What the Evidence Shows
Microsoft has announced that Xbox Cloud Gaming will no longer provide unlimited access for affected Game Pass subscribers. The change is scheduled to begin in November, and Microsoft attributed it to the rising cost of supporting heavier and longer usage. This supports the central claim that Xbox is imposing limits on cloud gaming, but the available reporting describes monthly allowances rather than a time limit applied separately to every session.cnbc.comcnbc.comMicrosoft to impose time limits on Xbox cloud gaming subscribers as costs...
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