Do people still think that third parties, Western in particular, are out to get Nintendo? Talk about burnt bridges all you want, Nintendo's hardware simply hasn't been able to run these companies' games. If Nintendo put a competent system in their hands, they'll at least test the waters at launch. These companies would love a third revenue stream. Next you'll say the audience isn't there - but there are few contemporary examples of a publisher putting a non-gimped version of a game on a Nintendo platform in a timely manner.
All of my friends who are gamers, but not such enthusiasts that they are on neogaf or care about console ecosystems, don't care about Sony or Microsoft first party - if they do, certainly not as much as they value Nintendo first party. The reason they have PS4s or Xbones is because third party games aren't at Nintendo. Why is that? Because third parties have a grudge? No, because the Wii U can't run the games. If the NX is powerful enough and gets total support (hypothetical), there's no reason they wouldn't game there. Third parties would have a healthy new revenue stream.
I know this is all anecdotal, but I really don't think CEOs making the decisions to support Nintendo are saying, "Gee, we're not going to be at this console's launch even though it can run our games because Nintendo needs to slowly repair our relationship over time." That's terrible business practice. Put a few non-gimped ports out at launch, launching relatively the same time as the other versions, and I guarantee you'll get sales. If not, then you can say the audience isn't there.
tl;dr: third parties are not high schoolers. "Lol you think Nintendo will get ports?" comments are nonsense until proven otherwise unless you work for a third party and know that your higher ups will never support Nintendo.