The most significant "lawful" forces that hurt economic liberty are regulations, price fixing, and certification. They vary in intensity from having to put ingredients on the bottle to outright banning incandescent lightbulbs, from corn subsidies to fixed rates in medicare, and from getting a drivers license to getting an MD.
But they are all barriers to economic participation and malleability. But they exist for reasons - to reduce exploitation in the system.
Those social safety nets, that in theory could be taking an economically uniform portion of productivity and thus have their minimal impact, also reduce the ability for people to be exploited. Loan sharks and get thin quick schemes are modern, legal forms of exploitation, but historically bad food products, dangerous housing and machinery, and outright extortion were all exploitation schemes the regulation machine reduces.
But if you have a strong enough safety net to keep people out of the desperation trap of needing money or resources to sustain their livelihood you can also eliminate swathes of the regulation that restricts markets without negatively harming those at most risk for being taken advantage of, because the state institution provides a floor on what the worst possible outcomes can be.
It is very similar to how easy credit creates business opportunity. Without credit, you cannot have a foundation to start out on if you have nothing in the first place. In the same way, either Scandanavian style socialism or the UBI proposals floating around can provide the foundation to enable more general economic freedom above it.
It is impossible to feel free when you are restricted to the bottom of Maslow's heirarchy. Maximal freedom comes from the top, where you have access to the full breadth of your potential. But any time you slip down to the bottom rungs again you are forced to contend with those, because survival trumps self-actualization. If you want to maximize for personal liberty of all forms, including economic, you need to make sure nobody is getting trapped down there.