I certainly hope not. PAYG is not predictable enough for smaller companies or individuals. Where I work (non-tech company), PAYG would never fly. We aren't big enough for that. Of course, you can set usage budgets, but there's a pretty big difference between $200/user/month vs. the equivalent PAYG usage being closer to $1,000/user/month, if you currently use the subscription plan to its limits each week.

Going PAYG only will effectively take these tools away from a huge amount of people and accelerate the push for local LLMs.

OTOH, accelerating the push for local LLMs would also be fine with me.