Mihir Wagle puts the kibosh on things:
On February 24, 2025, we launched Microsoft Fabric Quotas, a new feature designed to control resource governance for the acquisition of your Microsoft Fabric capacities. Fabric quotas aimed at helping customers ensure that Fabric resources are used efficiently and help manage the overall performance and reliability of the Azure platform while preventing misuse.
Note that these are not quotas you set on your users, but rather quotas that Microsoft sets on you.