Tech hubs like San Francisco are not "company towns", they already had multiple employers competing for labor, and workers already had the choice to go to these

Tech hubs like San Francisco are not "company towns", they already had multiple employers competing for labor, and workers already had the choice to go to these other companies that are becoming remote. The only difference is the benefits of non-remote tech-hub work that have been driving the high wages in tech - concentration of talent, face-to-face communication/team-building, advanced urban infrastructure - are now gone. So tech workers will have the same amount of company choice, but can no longer benefit from tech hubs; tell me why companies are going to continue paying the same high wages again?