Hi ,
Thanks for reaching out to Microsoft Q&A.
If Microsoft has said “system is constrained” for 3 months with no ETA, nothing is going to change in the near term. For Standard deployments of GPT5, the platform is genuinely capacity blocked and approvals are essentially frozen. That is why every Q&A thread has the same response.
Provisioned PTU is your only realistic path, but if that request is also delayed or rejected, then you have hit the hard limit of what Azure can offer right now.
Please 'Upvote'(Thumbs-up) and 'Accept' as answer if the reply was helpful. This will be benefitting other community members who face the same issue.