It's not risk free. Keeping a secret becomes harder as more people are involved. Employee (or contractor) turnover means more people are involved. The same go

It's not risk free. Keeping a secret becomes harder as more people are involved. Employee (or contractor) turnover means more people are involved. The same goes for the number of work sites, with each remote worker being their own work site. It is reasonable to guess that you don't have 24x7 guards, video recording, and competent on-site IT staff. Then add in a training investment, the legal implications (tax, insurance, holidays...) if you are in a different jurisdiction, and all the uncertainties that a one-of-a-kind agreement would bring. Not every company is prepared to deal with the situation you would create.