I do not understand why so many companies are so intent on getting people back into the office. I looked at the income statements for a few techs and banks on

I do not understand why so many companies are so intent on getting people back into the office. I looked at the income statements for a few techs and banks on Yahoo Finance, and for the tech companies their net income is up from 2019 (in some cases doubled), and for the banks it is about the same as 2019 (I picked 2019 because that was before COVID). Companies are doing fine with remote work. I don't get what their problem is.