To put it bluntly, because that's not what the contract (that I had no part in) specifies. The proper solution is just to fix their firewall. The interim hack

To put it bluntly, because that's not what the contract (that I had no part in) specifies. The proper solution is just to fix their firewall. The interim hack is what you've identified, do some sort of gateway. Unfortunately my bosses are non-technical and think we can simply copy google data studio with 1.5 guys and 12 months. Understandably I am seeking new employment.