I agree with you that the pandemic, climate change and disinformation are three of the most serious problems our planet faces. But let's not go blaming capitalism for them - do you really think another economic system would handle them better? What's your alternative? Marxism? Which, in every national implementation has degenerated into dictatorship, massive corruption, and the extermination of so-called enemies of the state.
Also, global GDP is closer to $20 trillion, meaning that $100 billion is more like 0.5%, not 0.1%. Moreover, GDP represents the value of goods, not the cost to produce them, so it is not a particularly good metric to use as your denominator.