[ChemicalWarfare]

ok, so 4 pools have over 50% of the hashing power, add 4 more pools right under them and you're at >70%. (https://blockchain.info/pools).

if that's not centralized I don't know what is.

the only argument I can think of here is that BTC isn't currently used for "important"/"mission critical" stuff, tx volumes are negligible compared to fiat methods of payment and ppl who use it are mostly crypto enthusiasts, so if hypothetically these pools go offline and it takes forever for their txs to be processed these users would be ok with that. Along the lines of what happened couple of years ago during the DDOS attack.