Subscriptions often don’t allow continuing use of even existing versions of the product after you stop paying - it’s not just about access to future updates.

The main exceptions are subscriptions that are explicitly for support and maintenance contracts on top of a perpetual license. There are also a few unusual business models, like JetBrains offer for subscriptions that last at least 12 months which grants a perpetual fallback license of the major versions (including future minor versions) that were current during any part of the subscription up through 12 months before cancellation.