They won't disappear, but for sure the corporations behind them need to sustain huge costs that the FOSS community will never see, and we're starting to see som

They won't disappear, but for sure the corporations behind them need to sustain huge costs that the FOSS community will never see, and we're starting to see some signs: Linux is free and shows no ads or collects users data; Windows costs money, yet it shows ads and collects users data. One would expect the opposite, and I'm glad that it's not the case.