You get what you pay for
In Texas, the realtor commission is normally paid by the Sellers. The Realtor listing the property, handling the marketing, the showings, the negotiations, and varies miscellaneous tasks, splits the commission with the buyer's agent. Commisions are negotiable.
The Realtor's cost of doing business is like any other business owner and has not decreased. Paying for the normal living expenses (gas, grocery, mortgage, children's education, insurance, etc ) has not been eliminated for you or for the realtor.
If someone is not willing to fight for their income, then how hard will they fight for you?
I love the fact that we live in a country where you can choose what level of service you want or even to do it yourself. Be alert to opportunities but aware that all that shines may not be gold.
Just food for thought.
All success to you.