Are they all just simply scams? or are there actually some legit ones out there ?
The majority of cloud mining companies are nothing but scam, the rest are overpriced, Viabtc offers a legit cloud mining service, I have not tried it but I use viabtc for mining and they are indeed trusted so it's highly unlikely that such a large pool will turn out to be selling scam mining contracts.
Also, IIRC bitdeer has a partnership with Bitmain which makes them somehow trustworthy, but again, the legit ones are overpriced, the fake ones are just ... fake.
IF they are legit ... doesnt the "overpricedness" really depend on what the market is going to do ... or would btc going up ont really matter, as you would also me mining less and less, as tine goes on, due to difficulty etc ...
how hard do you think btc would have to go up, to actually make it worth while, to buy like a 2 year contract now? what would btc (or eth for that matter, depending on the contract) have to move to, for it to have been a good decision?