It seems strange that the Deep Learning specialization course is not accessible on Coursera even after taking a Coursera Plus subscription.
Is there a single platform which can offer a subscription on which all DeepLearning.AI courses are available ?
Yes, this one.
They only have a monthly subscription I was looking for a longer annual subscription hence I purchased the Coursera Plus subscription but that does not DeepLearning.AI courses
The DL.AI Pro membership can be paid annually.
In India it is only available as a monthly subscription