Insurance works because companies are allowed to employ actuarial principles to determine their estimated costs per enrollee and set their prices accordingly. Caps allow them to limit exposure so that they can turn a profit. No cap means unlimited exposure. If you want a plan with no cap, you should plan on paying accordingly. If you force companies to offer all plans with no caps, then their exposure goes through the roof and premiums must follow for insurers to maintain solvency.
When premiums rise high enough to cover infinite exposure, those prices will be too high for most people to afford them. Thus, those people will not be able to buy insurance at all now instead of being able to by a capped plan. Who will pay for their care then? When most enrollees can no longer afford their plans, the insurance companies will fail. Who will pick up the tab then? I suspect the latter case is your end goal, and the goal of those passing this legislation. Only someone horribly myopic could miss this inevitable outcome. The disingenuous nature of the legislation is primarily what I object to, as it is nothing but a roundabout way to end up at a goal that very few of congress' constituents support (far fewer even than supported this POS bill). If you don't think that this outcome is inevitable, you absolutely do not understand how insurance works.