It could also make better use of its spending. On contracts for the purchase of technology, if it took the position that it would not buy anything that wasn't usable by all people--current employees and potential employees--that would encourage manufacturers to do a better job of making their technology accessible. If you used the infrastructure funds that were spent and demanded that no new barriers to people with disabilities be created by those sorts of things, that would be beneficial.
So the federal government spends money in various ways that could be used more productively to remove barriers that continue to impede our participation in society and make a positive difference in our lives.