On the contrary, their stance is more in line with the traditional view of progressivism. It's only fairly recently that free market capitalists tried to push for open borders and mass immigration under the guise of "progress". There's a simple reason why the big tech companies want more immigrants. It suppresses wages. It changes the dynamics of supply and demand of the workforce in order to take power away from workers and give it to employers.

If you're against the 1%, you should be against these neoliberal immigration policies.