Re: [ANN][preICO] Dolphin BI: The first cryptoasset investment analysis marketplace

What if volatility made connecting tokens with ETH become loss making? And if that way, may be there a possible ways to choose other one?

The presale tokens (DBIP) will be converted to DoBI at 1:1 rate before the main TGE. We recognise that if ETH price will rise, one can buy more DoBI per ETH during the main TGE (remember, that we price DoBI in USD and not in ETH), so the volatility risk may actually exist. We decided to split the volatility risk with our investors 50:50. If the ETH price rises, then we will cover 50% of early investor's loss from the founder reward fund. You can read more in Section 5 of our WP.

I mean, if using ETH as a currency/platform became ineffective, what could be substitute? ( taking into account that Waves remain the one which left)

It is a valid concern - it may become too costly to maintain the platform if the ETH price or gas price keeps going up. In a case where it becomes impossible for the platform to continue functioning, there may be some alternatives:

Running everything on our own brand new blockchain.
Switching to an alternative EVM-based smart-contract platform (e.g. Qtum, Rootstock).
Switching to Plasma (probably the ideal solution, but it is not implemented yet).
Switching to non-EVM-based smart-contract platform (e.g. EOS)

Of course, such measures are drastic and it only makes sense to resort to them if all possible cost optimization techniques are exhausted.