Crackle is owned by Sony (who owns Astro Boy 2003 everywhere or at least nearly). I was just telling the merits of watching the official streams.

They make money the same way as on TV thanks to their ads. But even if you don't look at the ads, they get money from hits anyway, and use those hits for their research in what products they should deliver to fans.
I think Uran would make more sense than Cobalt in a sequel. There's a reason Cobalt disappeared after the black & white series; he's too similar to Astro. If he's going to have a brother, it should be a complex case like Atlas in the 1980's series. But anyway, considering how the movie ended, it would make no sense for Tenma/Elefun to make him siblings.