If you have business policies that actively disable you from being able to compete, then in a way its "self-defeating". You could say that "self-defeating" is the same as anti-competitive, because, well, if your company doesn't exist, that's one less competitor.
Imperfect analogy: If Uber gave away every ride for free, that would be more "competitive" for some definition (lower fares = more competitive rate), but, Uber would go out of business within months.
That example isn't as strong as in this case though, but the general idea holds (price isn't as clear as business model). In this case Sentry is saying in order to survive as a company they can't sacrifice their only source of revenue completely, or they'd have no advantage. In doing so, they are keeping their own company alive, which increases competition against other companies in their area.
So it reduces competition of their own product against themselves, while it increases competition (by keeping them afloat) by making them stronger against their competitors. There's no real better way to phrase this, and I think the shorthand here works just fine. I don't see this as doublespeak or even lax phrasing, just choosing a frame that makes sense given Sentry is the one speaking.