The screen sharing is great on my iPhone but I can get a lot more use out of it on my Windows machine.
Currently resorting to Gemini Experiments to achieve this and waiting not so patiently for OpenAI to add this feature across the different platforms.
I love the innovation at OpenAI but sometimes the selective rollout of features to Mac OS only or Web App only or Mobile only is stifling my creativity. 
I have found sharing my screen to be a great way to learn how to use a new piece of software like Figma and even when it doesn’t know everything, it thinks more logically than I do about where a feature or setting might be hidden. It’s like having a tutor sitting next to you while you learn.
I assume this is coming but it’s been a minute and I’m starting to worry that it’s not going to reach Windows.