Why don't more large companies embrace having remote workers?

Control. Power. Ego of management.

Concerns about dwindling mid to long term infrastructure (such as office realty, equipment management) - needs to be addressed - there is a good chance for a large company to slowly disintegrate and lose control.

This is the opposite of what I understand. Large companies got large because they have remote workers to minimize costs.

Fear by upper management. Usually unqualified, undisciplined leadership refuses to treat employees with respect because they know how inefficient they are if not onsite and focused.

I think it is the fear of performance issues. Some people take advantage and won't really work.

Older managers with entrenched ideas of how things can be done.

Fear of losing micro-management.

old mindset. not trusting people to do their job. not respecting people.

Cause it’s easier to have them around and have more controll

Fear and perceived loss of efficiency

Most of them do, especially in sales or client service roles. R&D roles are harder since in person communication is much more efficient.

they would loose control of the work place

I believe it is a problem in old-school management circles with the perception or assumption that trust and accountability will be a problem. This comes from the mistaken notion that being able to see a person who appears busy at their desk means that they are working hard. When we alter how we measure work, then remote work becomes more attractive and even preferred.

There is a mindset (especially with old school managers) that an employee cannot be trusted to give 100% or work their full 8 hours if no one is watching.

They don't trust what they don't see. Managers should only pay attention to the factor -> Expectations /Delivery or the employee levels of efficacy and efficiency.