This is something I think a lot of designers have trouble with because, generally speaking, we're not as "profit driven" as most professions.

Yeah and its a huge mistake to do that, because designers ARE profit driven (ie, the company wants to get more money by reaching its audience better by paying us to handle that problem). I've always felt like this was always the big elephant in the room that people in design try to ignore, as if we're these pure artists. The only reason we're not just sitting in our rooms making designs for fun is because businesses have decided that design does have a value and does bring in a profit (THANK GOODNESS). That's why we get paid in the first place, not because businesses are charities funding our art exploration lol.

So defending it from that standpoint becomes that much easier. I've told people something as simple as "not putting your navigation bar up there where it usually is WILL lead to less people clicking on your consultation page, and all you need is just ONE PERSON who doesn't do that and goes to someone else to have costed you hundreds of dollars, is your idea really worth that to you?"