Capitalism is a system where the right of ownership, and the disposition of such ownership, to commercial or personal purposes, are the primary guidelines for the civilian relations. This system is powered by drives that encourages the individuals to acquire even more ownership, what creates wealthy from the accumulation of value derived from the commercial exchange, enriching society as a whole. Mere mitigations of the ownership status (such as redistribution by welfare) does not disnature capitalism, for the basic premises remain the same. Also, dictatorial tyrannies that tends to create large states dont disnature a capitalistic system, because the ownership of one (the dictator, over the entirety or almost of the wealthy of society), is still a personal ownership system, even if with the creation of an artificial monopoly, and hence fundamentally different from any kind of non-individualist approach where the disposition of wealthy is collective.
I believe the system should persist, if for no other good reason, for the lack of a viable alternative. However, it should be altered to avoid the ebullition of a class conflict between the excluded and the benefited potentially harmful to both classes.
The implementation of these changes is something tricky, and I believe a better man then me would be required to actually develop a functional system. However, the way I see things, exactly like, when the capitalism arose, a mentality of ownership was grown in the culture of the people in Europe through the argument (and demonstration) that owning things would mean taking steps further in the search of personal happiness a new humane mindset should be pursuit, one where the importance of the social body as a tool for making personal wealthy possible becomes more clear, and tangible, in the heads of the population. This would allow for the effective, intelligent, planning of the goals in economy, and history shows that the application of reason over natural processes tends to increase their efficiency. The problem with the attempts so far to rationalize economy masquerading it as hopelessly depended of the natural dynamics of the market is that such mentality was never set on a population, and the competition for exclusive ownership and immediate privileges the political legacy of this systemic idiosyncrasy tends to null any of its possible benefits, decreasing efficiency instead of increasing it.
Hence implementation is dependent of an actual reassessment on the immediatism that men have in the pursuit of their goals, and the acknowledgement that individualism can and should benefit from collectivism for united we prevail, separated we fall.