Hey @crypto.piotr,
interesting perspective from the point of view of an investor, I never thought about it in that way. It does seem quite unfair to investors to devalue their investment by giving away free tokens which others paid for. Disclosing the details of such actions before hand would be the logical thing to do for all ICO's.
We should demand it implemented as a standard piece of information ICO's and IEO's should disclose before going live with the first sale.
Have a good one,
Cheers!