You are conflating the very two things i am trying to distinguish here... luck, good environment, good parents are all opportunities.
Talent is something you earn with hard work, passion, effort, and yes is compounded and encouraged by merit, but can only do so given the opportunity. If society does not reward these things it falls apart, if a business does not reward these things, poorly qualified people end up making things, passionate people end up demotivated and stop improving, dispassionate or incompetent people produce rubbish without improving, nothing good comes out of this.
Many people suggest the merit is all that's needed, and that's not true, you need both. Honest insightful and successful people recognise how important opportunity was in their success, and when the world is viewed with this perspective you realise meritocracy is not enough - but being insufficient does not automatically make it bad.
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for clarity, I more delicately rephrased the part the parent quoted before they posted their reply, but I did say that:
> Meritocracy is a friend of disadvantaged people