Too Many Spiritual Successors, Not Enough Predecessors

Once Upon a time, in the last post, I talked about Yooka-Laylee and how it was officially the spiritual successor to the popular Banjo-Kazooie series. I talked about how in the short time its Kickstarter was opened it met its goal in just under 40 minutes and continued to raise over 2 million dollars USD in the short time the Kickstarter page was created. Along with Yooka-Laylee, another spiritual successor has come out of the woodworks. Bloodstained: Ritual of the Night the spiritual successor to Castlevania and created by the series' former producer Koji Igarashi has, just like Yooka-Laylee, reached its goal and then some. Just like Yooka-Laylee, it has also made over two million since its Kickstarter page was created in almost the same time period.
     2015 is starting to be the year of Spiritual successors. We have the work on Yooka-Laylee and Bloodstained: Ritual of the Night starting off to extremely well starts and we even have another spiritual successor on the way. Mighty No. 9 was a game made by Mega-Man creator Keiji Inafune which is suppose to be the successor to the Mega-Man franchise. It has met the same fate as the two previous games mentioned earlier. While this is all great and exciting, the question is what about these games' predecessors? What will happen to them?
     As much as it is nice to see these games, Yooka-Laylee and Mighty No. 9, being made it's almost bittersweet that we haven't gotten anything new from their predecessors. People are still clamoring for another Mega-Man game and people are still waiting for a true Banjo-Threeie.With the demand from fans, why isn't studios and developers trying to make new games from these franchises?
    What's the problem as to why most if these games haven't had anything new is that the studios and development teams have moved on and don't want to take a chance on these old franchises. After what happened with Nuts & Bolts, Rare just seems like it wants nothing to do with another full-fledged Banjo-Kazooie game. Mega-Man hasn't fared well either. Capcom has tried to make some Mega-Man games in the past but were met with poor sales. Capcom has tried to take the series in new directions, but they have yet to figure out what direction to put the series in and has cancelled project after project.
     What could be done to get studios to try to revive these franchises and start making games for these franchises again? What do you think needs to be done in order to see new games again?