A woman who is only attracted to you for what you can do for her will lose attraction as soon as you stop doing things for her.
A woman who is attracted to your personality will only lose attraction to you if you start behaving differently.
Your goal, then, is to develop the sort of personality that attracts women, while completely hiding any hint that you can do things for her.
Instead of telling them about your business and motorcycle, don't say anything. Instead of taking her out to a fancy dinner, grab some food at McDonalds and have her pay for herself. Or have her make dinner for you at her place.
Be a selfish bastard.
Put her to do things for you. Have her pick you up. Have her drive you around while you run errands. Have her wear a specific outfit of hers that you enjoy taking off of her. You don't have to be selfish all the time, but you have to get to the point that she assumes it's just who you are.
You're not there to do things for her. She's there to do things for you.

Later on in the relationship, spending money on her is still a bad idea because is shifts you from alpha to provider. This is a Very Bad Idea that can cause her to lose sexual attraction to you, encourages her to give you drama, and increases her chances of turning you down for sex (a Nextable offense).