Not much of a choice if you ask me, but ICO teams right now are probably too afraid to switch 100% to Byteball because of community backlash, can't just ditch Ethereum and get away with it. This will happen more and more as the serious projects start building their applications. They will find out the hard way that Ethereum doesn't scale and won't for a few years. Then you start looking at alternatives but there are almost none. Byteball is the only working platform on which you can actually build your stuff. A lot of projects never actually release anything so they don't have this problem.

The future is bright for Byteball.