DHX is primarily a media production/distribution company. Broadcasting is more of side business they got into to help with that original goal. As such, they'll still sell to anybody willing to front the cash. Last year, they launched two new cartoons on YTV (Chuck's Choice and Cloudy with a Chance), despite that channel being in direct competition with the Family suite. We've seen a contraction in recent months (Inspector Gadget and Supernoobs, originally Teletoon originals, have had new seasons debut exclusively on Family) but it's hard to know if that's DHX becoming more insular, or if that's from Corus. There's been a few reports stating that Corus has essentially stopped funding children's shows they don't own.
When it comes to exploiting their library on linear, DHX is surprisingly lax. Even on Family Chrgd, which is the least popular of the four channels and has limited first run material (even less that doesn't get rerun on the main Family), rarely touches the DiC/Cinar/Cookie Jar productions. It's weird too, since DiC made a bunch of video game adaptations in the '90s and you'd think they would go well with the modern video game cartoons the channel runs. Instead, they tend to use their back catalog on streaming services, cheapo Mill Creek DVD sets or questionably presented YouTube uploads.