Do the numbers for Regional service refer to what I think they mean: the non-Acela and non-Metroliner services between Boston/ Springfield and Norfolk, including points in between like NYC, Philadelphia, and Washington?

If I understand the Amtrak lingo correctly, Regional service does NOT include the DownEaster nor the Empire Services, nor the Keystone Services, nor the Vermont Services.

How do the local trains lose almost as much money as the express trains are making in profit?

I am actually curious, because the locals I take are usually rather full. If they are losing all of the profit that the Acelas are pulling in, why not cut some local services, like Tuesday-Thursday services, for example?