Your observation of socialism is well validated by almost every historical standard, as indeed it eventually requires strict enforcement to sustain itself before it runs out. And run out it always does. As Ayn Rand attempted to teach us decades ago, the tax revenues of rich people are available because rich people make them available. They don't have to be profitable it they don't want to be. The form of socialism that is taking shape in this Great Nation of ours will depend on our most productive people's ability to possess this one nasty quality: Guilt. A guilt that will hopefully shame them into (just to make a few examples) continuing to employ labor, continuing to produce products, continuing to purchase raw materials, other goods and services, continuing to pay taxes, etc., regardless of the fact that their ability to reward themselves has been considerably compromised if not eliminated completely. But eventually this guilt will not last and they will quit. Enter socialism with a fist.