If eth is the apple of such large enterprises, can be changed, but also changes more and more difficult. If we do it again, it's "fork". This kind of bifurcation needs community consensus, otherwise it is waste paper.
The addition of smart contracts, into a network, guarantees
a steady flow of soft and hard forks. This change of direction signifies a significant jump away from the previous generation of crypto-currencies.
Turning to abandoned blockchains: for any group to pick up an abandoned blockchain of a big entity (like Ethereum), the group must own a significant quantity of Ethereum in order to finance the purchase of inevitable dump of coins for their smaller entity (new Eth? coin) using an abandoned blockchain.
I, really, don't think there is any miner or group of miners who have several hundred thousand Ethereum coins to finance the launch of a new coin using an abandoned blockchain - it is just FUD by people to claim there is another group of miners who have a spare 100,000 to 300,0000 Eth for such an enterprise.
Human greed is great ... If it is economically feasible, then there may be people who will invest such funds in order to get more ...
The people, who created ETC had 100,000s Eth and they were also major GPU miners. No miners are left on Ethereum Network who have 100,000s of Eth.
So, this is just FUD - there is no-one involved with Ethereum mining with the Eth to finance picking up an abandoned blockchain as a new coin.
maybe miner move their funds to another wallets due to regulation and Tex charges.
and right now mining eth is so complicated because of difficulty increases and price drops
but i think miners could get the more profit by hold their mining eth reward and wait for eth price rise
many people are saying that eth will starting go up and in the end of this year we may see a new all time high price