Could there be an alternative model where companies give up (often illusory) secrecy for most things, and have employees working in shared spaces near their acc

Could there be an alternative model where companies give up (often illusory) secrecy for most things, and have employees working in shared spaces near their accommodations, with employees of other companies? I think that's already the case for a lot of startup accelerators because it helps spread and nurture ideas. You trade internal knowledge transmission for transfers with other companies, most likely not competitors anyway. Covid WFH completely gives up on offices, but post-Covid does not have to be that extreme.