The only way for it to gain traction is is large companies not only declared their switch, but also request and/or develop the same proprietary bullshit like photoshop on Linux.

No, state actors are also crucial. China getting rid of the NSA spyware that is Windows and MacOS on their government PCs is an important step. At a certain point, those clerical workers who spend thousands of hours per year on a Linux distro are going to continue using what they are familiar with when they get home. They're not going to waste their free time (re)learning how to use Windows or MacOS when they've already have thousands of hours of experience with Linux at work. With this boost in Linux users, Adobe and et al can either leave free money at the table by continuing to not support Linux and have that free money be snatched by Chinese developers or they can port their enterprise software to Linux. And with that, the last real roadblock towards wide desktop Linux adoption is lifted.