It worth noting that the forecast is exactly what it's, just a forecast.

Nintendo could ship more or less than 6 million depending on the market demand.

eg: They forecasted 12 million Wii Us to be sold in the first year but they end up selling what is actually like 1/4 that figure.

Nope, not as easy to pirate software on 3DS and mobile market has had a chunk taken out of it. I don't think any mobile dedicated handheld will reach PSP, let alone DS.

No, with the New 2DS XL, Dragon Quest, Metroid, and Pokemon, this will be it's last good year.

I do think that it will eclipse 75 million. After the 6 million total, it will add another 3 from March 2018 to March 2019. After that, I think it could scratch and claw its way to 77. By which, the Switch will already have Animal Crossing, Fire Emblem, and Gen 8, killing any doubts that the Switch is the 3DS' successor.

So, yeah, I'll say 77 million will be it's final number.

Most likely? Nah. A lot of the titles Nintendo is bringing to the 3ds are high quality "legacy titles". Either remasters or small little games a lot of people don't care about. I will say though, their support for it is still very good.

I predict that it'll finish just under the PSP, so maybe something like 79 million.

No, I don't see it happening, even with a pricecut and a new model after the 2ds xl