It is possible. But the problem is, Brazil always has so many great duos, it is a very very tough competition and only 2 teams per country can make it.
Last time I checked Brazil had 4 duos in the Top 10. And only 2 will qualify.
Next OG cycle won't be any different. But will be interesting to watch their journey.
I am rooting for them. Mari was the reason why I fell in love with international volleyball. Watching her downfall in 2011 was a heartbreaking moment for me. Hope she will do well in beach volleyball.