Are subscription based business models really sustainable?

The rise of subscription-based business models has been a hot topic in recent years, as more and more companies are shifting away from traditional sales models and adopting a subscription-based approach. Some entrepreneurs argue that subscription-based models can be too rigid and don't allow for flexibility, while others worry about the long-term viability of the model, especially in a market where consumers have so many options to choose from. I want to hear what you think about this: are subscription-based models sustainable in the long term, or are they just a trend that will eventually fizzle out?