Becker
“Someone else always has to carry on the story...”
I think a great way to think around the frustration is this:
"It's their loss, not yours."
If you meet their requirements but they decide to move-off and not contact you to say "Thanks but no thanks" then perhaps this person might not be best for you away. Basic mannerisms and punctuality are very important in 1-2-1's so if you find it lacking, it's not a great loss to look elsewhere. (Never know, the greatest partner in the world could be right around the corner!).
I'm curious to know what your thought are about group RPs? It's been rather hit and miss for me in regards to finding a great GM to keep the status quo 
Well when I did group roleplays at most there were three maybe four participants. I'd never come across what you described before mainly because there was not really a gm just the topic starter and we all took turns driving the story together. Occasionally there was that one character totally op or drama but nothing like what I've seen these days. It's something way out there. I would try sometime, something small-four people at max lol now excuse me for getting off topic! Carry on everyone!
Communication makes or breaks alot of threads and so I believe people who are honest and speak up about things may actually be very helpful to others, such as new RP'ers as I said before, GM's who are perhaps struggling with their threads and so on. I can't magically read minds so I don't know whether or not the people in my RP's are happy with how the story is progressing, content with other characters and generally continuing to be involved with the journey. Feedback (Good + Bad) is always massively appreciated! 
I honestly wish I came across more people like them because i'm beginning to be put off group RPs due a horrible combination of passive-GM's and RP'ers that just want to 'win' all the time and don't particularly care about the story itself unless it affect them. 
When you come across characters that actually try to out-think a situation rather than wasting valuable ammunition are a god-send. I think the Metro 2033~ series does a wonderful job of introducing fire-arms but keeping it reasonable. Alot of the survivor militias are armed with a gun, lovingly named "The Bastard". Made out of piping, basic metalworking and reusing spent bullet casings. The Bastard is a cheap, easily made but horribly unreliable self-defence weapon and I absolutely love the idea of people creating these types of "Make-Do" bits of equipment than having a armoury full of Spec-Ops Assault Rifles, Sniper-rifles and Light Machine Guns. I really wish more community based survival RPs introduced improvisation as a norm for setting a fundamental part of what I would call the difficulty. Can't call it survival if you only have to move your thumb to disengage the safety on your tricked out AR-15 and defeat x,y,z situation. 
