The article states they’ve tried cutting funding for employees and facilities repeatedly because of “austerity” and budget cuts to get to the current situation. They made public spending choices to get here in national and local government. It’s not lack of knowing how to build things, the situation is snowballing from long response times to GP to people resorting to using emergency rooms for first contact with healthcare providers American style.

A hospital bed isn't a bed - any idiot can buy beds in bulk from any hospital supplier.

A hospital bed is a package that consists of the bed and the long list of stuff needed to support that bed, which includes all the staff (doctors, nurses, healthcare assistants, allied health professionals, admin staff, cleaners, porters, food preparation, etc etc) -- and all of these staff are in short supply in England.