With remote freelancers, you won't need to pay for an office or pay other office related costs - parking, insurance, electricity, internet, etc.
They only work when you want/need them to. If you have a slow week and not a lot of work for your business, then you won't need to pay for a full 40 hours when only 15 is needed.
Employees can be expensive with having to offer benefits (insurance and 401K matching), cover a portion of taxes, offer paid time off, company wide functions, etc.
When you have remote freelancers, everyone can be a 1099 contractor instead of W2 employees.