Can socialism succeed? I don't know. As far as I can tell, it's never been honestly tried. By which I mean that so-called 'socialist' economies and social structures have always been imposed from the top down, rather than grown from the bottom up.

Can capitalism succeed? Not if people insist on saying wealth can be created. Wealth is an expression of energy, and energy, like matter, can neither be created nor destroyed but only changed. Capitalism currently functions by taking the energy (work) of many and converting it into wealth (energy) that is gathered and hoarded by a few, who use part of this gathered energy (not their own) to create the means to gather more energy from the many. But the amount of energy in the system, in whatever form, remains finite. Energy that is stored and not used does not contribute to the running of the system, so ultimately, the system must run out of useable energy. As things stand, the working part of the system is not being sufficently 'recharged' because too much energy is being stored as unused wealth (ie wages are too low to live on, so productivity suffers). Since the energy hoarders are unwilling to release this stored weath, they must be made to do so, or the system will collapse.

On another point, the very concept of 'objectivity' is ludicrous, since we do not perceive reality, but only signs, which we interpret subjectively.