I don't/can't believe that the absence of an LGBT solo is that cut and dry.
Yes, of course, Sana Amanat championed for the creation/promotion/success of Kamala Kahn. But how many people even knew about Sana Amanat until Kamala was announced/hinted/advertised? There may be someone actively campaigning on behalf of LGBTQA heroes and potential solo recognition -- then again, there may not. Perhaps there hasn't been a good pitch. Perhaps there are any number of other contributing factors hindering such a title to exist at this specific time.
Our NOT knowing does not thereby ASSURE an absence of interest/appreciation/campaigning. I would think that many writers within the Marvel umbrella continually pitch ideas and stories and books --- loads of them that never reach fruition. The complexities of these publishing giants and the intricacies of their internal politics is likely far more elaborate than we're willing to even consider. It isn't just a club house of dudes sitting around going "Wolverine is the ****!! MOAR WOLVERINE!" or whomever is Marvel flavor of the year. There are soooo many things to consider in tackling NEW projects. The pitch, the availability of characters, scheduling, artist availability, how/if it will affect the other Marvel titles and/or the Marvel U at large, etc etc etc.
Speaking again to alleged "lack" of voice within the company arguing for LGBTQA representation of the solo variety (because, again, we HAVE LGBTQA heroes, just not on solo books) -- there is no evidence. A lack of evidence doesn't mean its being dismissed or ignored or even avoided. The same could be said about ANYTHING lacking solo representation.
Why isn't there a Skrull solo title? Why isn't there a Hawaiian solo hero? Australian? Handicapable? Toddler? Simply because they do not currently exist does not mean that someone hasn't come up with an idea for them -- but perhaps said idea didn't make it past the necessary qualifications and criteria required by Marvel.
I still crave and hope for an LGBTQA title to find its way into the Marvel publishing line in the future, but I don't want it crafted on a half assed idea only to flounder and fail. And until it happens, I will find comfort and enjoyment in those who've assigned my beloved characters to their respective rosters and fostered them -- keeping them exposed to readers and developing them for a potential solo future.
Call it naivety.
I call it hopeful.