It's also up to the respective studios, Banjo's creator, Gregg Mayles, is still at Rare but Rare hasn't been particularly aggressively restrictive over what IPs they allow others to take, in recent history they've allowed Perfect Dark, Battletoads and Killer Instinct but no Banjo...I have to wonder if maybe they just haven't received a good enough pitch from someone, that or Gregg doesn't want someone else making it other than himself.
I thiiink in this case we can let it slide until Gregg wants it to happen and I hope Toys for Bob want to do a Banjo and convince Gregg to let them with a good pitch but it may just be a Remaster effort as I think Gregg would want to lead Banjo 4 but he has been busy lately, first with creating Sea of Thieves and now he's leading Everwild so he really has no time for a Banjo sequel.
