Most places I've worked, despite similar security needs, have met them in a much less... performative way.

After all, the security gate is the first impression visitors get of your industrial facility, or office, or embassy, or whatever. You want it to look welcoming and secure at the same time. Projecting strength but not fearfulness.

If you must use the cheap fencing, conceal it with some plants. Where the fence is visible, go for some nice decorative metalwork. Move the turnstiles into a lobby and put a reception desk and some couches next to them. Add some meeting rooms (and toilets and coffee facilities) at the security boundary, so job interviews and meetings with suppliers don't give them unfettered access.

The performance aspect is necessary when managing optics with a whole nation's population. Plenty of people have no idea what good security looks like, but they expect it looks like a lot of steps and many inconveniences.

Corporations generally don't need to worry about this.

An influential social media figure started naming federal employees who should be fired because their job is a waste of tax money. Some of those employees are now receiving death threats.

The government doesn't generally spend a lot of money on things like "decorative metalwork". People get grumpy about it.