That's specific to your own server, not the game at large. There are a few i180 Combat pieces on the market on Tonberry, I've even sold one or two myself. If your server has a decent population I guarantee that if you advertised the ability to Craft 2-Star pieces you would get a few people asking about Combat gear. I Crafted an i180 BRD Chestpiece for someone 2 weeks after Red Scrips released, and that was when prices for materials were way higher than they are now. You won't get anyone asking about them if you don't promote the fact that you can Craft them.
If you don't have a Gatherer to get you mats, then level one. If you don't have a Raider to get items like Ravana's Forewing then start running Ravana EX yourself. There's plenty for you to do, it just isn't what you WANT to do, and I understand that completely, but if you aren't suggesting any solutions to your problems or even trying to solve them yourself then there's nothing I can really say to help you. That being said, it IS an MMO and you SHOULD be able to find people to work with and grow alongside each other. If you're actively out there trying to find people to play with or Craft for and you just aren't having any luck then it may just be your server and I'd suggest transferring.
Edit: There's nothing wrong with working together as a community to achieve something, but there are also people who prefer solo play. I personally enjoy Crafting because I can Progress my Endgame by myself. I have the ability to Progress faster with the help of a friend, but it isn't a requirement.