They can value and need your contribution or steal it until they figure out how to do it themselves but they don't have to feed you respect nor do they have to treat you at your worth.
Value is in the eye of the beholder... but the important thing to know is many women's values can shift like the wind depending on her circumstances. If circumstances are such that she has a 'temporary need' that you fit, yeah, she might take advantage, but she will eventually drift back to her baseline if circumstances change. In my 30 plus years of dating... I have seen this COUNTLESS times... Everyone always wonders why chicks run hot and cold... this is why. One more thing... money is a good consultation prize but that isn't her NEED... money fixes a lot of problems, but it is a solution, not the end-state.
But if you meet her baseline needs on who YOU ARE... you will have more hot than cold periods, and this is the best you can hope for. if a LTR is what you want. Being really good an figuring out her baseline, is the key to success if you want something to last, and the ONLY way to do this is to be who you are, the best version of who you are... and let her find you. Never try to change yourself into something you aren't, because you can't keep that up. And if you want to know her baseline... well it all depends on how she responds to you initially while you are who you are.
There are too many times where a dude will chase a chick for years, then all of the sudden, something changes in her life, then suddenly you are meeting her immediate needs... he thinks he's finally convinced her, that he is lucky.... they get married... and then sh1t goes sideways and you are finished. NEVER chase women, if she isn't chancing you from the start you are headed for trouble.