BSV is poor example of big block size. It's doomed to failed since it's associated with faketoshi, don't care about cost/difficulty of running full node[1] where many decide to drop support[2] and even implement confiscation stealing mechanism[4].
All the Faketoshi stuff aside, its blockchain is approaching 10 terabytes and is supported by less than 100 nodes. One mining pool dominates with 54% of the hash rate. There couldn't be a clearer picture of why large blockchains leads to centralization. You can say, "ah but nobody wants to run a coin led by Faketoshi," and you'd be right, but even if he stepped out of the picture completely, I sincerely doubt things would be any different.
Even if faketoshi stepped out now, it's far too late since the damage has been done. And Etheruem would be somewhat better example since it has 16.5TB storage usage[1], but with 7.3K node running[2]. Although node number is rather high since Ethereum use PoS.