There's something fantastically Luddite about the whole 'Save Pret' angle.
What's the point of trying to reverse-engineer ourselves back to a model that was already standing on shaky grounds?
Why not look forward? Why not help businesses adapt and diversify and let the market dictate what succeeds, giving a soft-landing for those transitions of business?
I don't want to be quit of the office for good.
I want decentralisation of office spaces, and a vast increase in shared office facilities distributed around towns, villages and suburbs. I'd like everyone to be able to access shared workspaces in flexible arrangements within walking distance of their homes and children's schools. I want to see businesses serving these offices thriving.
There are professions that need to be located in a specific place.
There are parts of office work that need to take place together. There are business functions such as having a registered address that need a defined location.
There are parts of office work that can be done more efficiently from home. There are personal work/life benefits to go alongside that.
This policy is mean in spirit and backwards in intention.
(and like @Byllis, I'm personally happy to be taxed more based on my high income, but not because I WFH)