Subscriptions aren't enough for SaaS companies, we're now moving towards credits

I just got an email from Netlify talking about their upcoming shift from fixed-priced subscriptions to a credit-based subscription.

You now pay for credits. When your credits run out, your website stops.

What counts towards credits?

- Deploys

- Compute hours

- Form submission

- Bandwidth

- Requests

Is this the next greedy evolution of subscription-based pricing?