It's sad that, once again, black wealth has failed to stay in black hands. One of the richest black men in the world has left his entire fortune to a band of white test tube babies that are no blood relation to him. But, be that as it may. The will is solid and incontesable. The black Jacksons will always lose on that point.
What Janet should do, as the only other Jackson with money and the capability to earn more, is to create a revocable living trust to support her broke, ***-ass brothers, funded by the proceeds of one massive Janet Jackson album and tour.
She should, first, visit a financial planning professional to figure out what it would take in a lump sum of money, to generate a lifetime income stream that will keep her brothers comfortably supported for life. Generally speaking, that will be the annual income require times 25. Say her brothers can get along, comfortably, on a millon dollars per year to be shared by all of them. I think that's reasonable, given the fact that they are almost senior citizens and should have already have "sowed their wild oats." So that would be 25 million needed for her brothers, in theory.
Janet should then get back in touch with Jimmy Jam and Terry Lewis and record a GOOD, marketable album, like "Janet," the "Velvet Rope," or "All for You." Not a dud like "Discipline." Janet could then tour for however long it takes to make that 25 million (a year, two years, whatever). Once the trust is funded with the $25 million, the brothers should be provided with a monthly allowance, just like Katherine. Janet's own $150 million principal assets will then be safe from their bumming and begging and she can live it peace with the reality that nobody is getting Michael's money except his white, bought and paid for children.