Deep Work Stop
Quiet tiny spaces in cities with wifi access, computer/tablet, desk/chair for a moment of deep work
An extension of libraries to a network of small physical work-spaces for one person to sit down quietly and do Internet research, paper drawing, reading, meditation or take a phone call during a busy day in a noisy city.
The space is connected to a local library network and is accessed with a library card for 1 hour, which ensures that the space is used responsibly.
The network of spaces is sponsored by national telecommunications companies to ensure there's a wifi connection and simple-to-use devices (e.g. tablet) available, suitable for people even with a low-tech skill.
Portable Solo Work-Space
In Japan, there exists entire phenomenon like this.
Those who have cars and good mobile internet access may have not noticed the problem, but for those, who are on a bike or on feet, finding a silent and private place to work is a problem: most cafes are not silent, and not private, not really suitable for work. Rentable offices are not abundant and ubiquitous. So, I see the problem.
However, to make such "work stops" ubiquitous, you'd need to seed a large number of them, across country, and you risk that still, people will bump into times, when locating one is an issue. How many such stops would we need? So, not sure if this would be a real solution.
Would any of the concept cars (like this Mercedes), with "summon on demand" function, -- be able to replace such work stops? Or, what about noise-cancellation devices, like noise-cancelling earphones and noise-cancelling speaker (like hushme), and a privacy screen (like this one, using polarized glasses), allowing to convert any cafe with a good table into a silent one, suitable for work?
As for the extension of libraries, I'd like to share experience -- in Japan, it is normal to study a lot, and university libraries don't close at night, so you can enter a library at any time. In addition, in Japan, the Manga Cafes (see link below your post) are common, and provide pretty much what you're describing. So, it's invented, just not popular in the West. Duh, it makes me want to go back to Japan...