yes, sharding is a game changer not only for scaling. it incentives 'entities' to stay on the eth chain instead cloning.
it won't prevent cloning in all cases but for many 'products', acting on consumers, it gives advantages to run contracts
on semi-private metalayers on the main chain. sharding is used since years in db-country so it should work. however,
as soon sharding is confirmed, i will throw my remaining btc on eth in zero-time.
Are you sure you want to do that? Let's assume Ethereum succesfully scales to 100k transactions per second and let's assume Ethereum gets popular and apps are run on the network even so much apps as to reach that 100k transactions is run every second. I calculate that even then the daily total transaction costs would be around 1296ETH per day. Surely POS rewards are much more than that and this is why I believe there's much higher sell pressure on ETH than buy pressure. My logic tells me the price will only go down as Ethereum scales.