Great observation!
This is an inherent tension between freedom and equity.
Some are more talented than other and work harder than other.
Any inheritance either economic or political will compound inequity
Heavy tax in inheritance and education (maybe medical and other basic life) expenses mean test (pay according to your family incomes and asserts) is the way to 人人生而经济平等.
People can use money to bid park's and highway's name instead of pay tax before they die. Use this money to make sure 平等 opportunities not 平等 results for all. Society give food stamp and grant to reward child who hard work from poor family. Not reward anybody laziness.