Moneysinks:
Skillbooks (required to start learning new skills).
Blueprints (the base of all and everything in this game, without them you can't build anything).
Loyalty stores (some of the best items have to be bought here with cash).
Taxes in various forms (everytime you sell something, the game gets a cut, sation rentals, production rentals, etc...).
Fuels of various kind for player owned structures (this will change with new patch but it will be a diferent moneysink, with export taxes).
Cloning costs.
Ship insurance (if you manage to keep your ship alive for the 3 month period of the ship insurance, and yes i know about insurance fraud, but that doesn't apply to rigged ships or tech 2/ tech 3)
About the gear just one word "destruction". Everytime your ship gets destroyed, it's gone forever, you have to get a new one, and half of the equipment gets destroyed too, the other half "drops" so you can recover it (or the bastard that just ganked you :P). And this being a game with a huge PvP factor, you can bet a loooot of stuff gets "erased" everyday. (Usually this would fight inflation too in most games, but since about 99% of the materials for crafting are player generated one way or another...)