The health care law is gradually finding its niche as an entitlement for what the Census Bureau defines as the “working class”–lower middle-class families that earn too much to qualify for Medicaid, but instead fall into the sweet spot of ObamaCare’s subsidies. Increasingly, these Americans will find themselves forcibly moved into ObamaCare, even if they currently have coverage sponsored by their employers.

A key number to watch from this year’s enrollment season is the percentage of enrollees who receive cost-sharing subsidies. It’s a fair bet that this will be the only number that rises by a notable margin over last year even as the rest of the program stalls. In the end, Americans are rational economic actors. Not only when it comes to who avoids the ObamaCare scheme, but who gets drawn into its grips.