I personally think there is a (sometimes subtle) difference between paid software and harmful software.
Meta and X are definitely causing harm, but is something like Synergy? Sure, it costs money, but that money seems to be going to the developers. That would be no worse than paying a street vendor for food.
Likewise, finding an open-source virus and using it to hack people doesn't absolve you of guilt.
While many large corporations tend toward capitalism, corruption and even fascism, I believe there is a lot more nuance than just paid vs free or closed vs open source.