Quoted from PinMonk:
Hiring it out to a service kind of defeats the purpose of DIYing it to save money.
That depends on the service. For example, I designed a fix for the Rush inner loop, it's cheaper to get it printed from Xometry or Shapeways than to buy the alternative design offered by sellers here.
Alternatively, some of the "services" are non-profit entities, like libraries, or offer DIY access cheaper than a service would, like many maker spaces do.
Or maybe you just prefer using a material that's slightly different from the retail offerings, or you'd like a slightly different profile, and so saving money isn't even the point.
My point is (i.e. your statement that I disputed) you don't need to buy a laser cutter to have access to one, and there are plenty of scenarios where going that route is preferable to just buying the part. I get that DIY threatens your business model (generally...not sure if you sell this kind of thing specifically), but let's not contrive false narratives. If someone wants to cut their own protectors, just let them.