I don't know that they are losing boats. Halls told me in 2018 and again last week "we are full". Though Wahweap said "they have cleared out everything they need to, and no further work til this winter" Whatever that means.
I think for a lot of the smaller ownership group of boats, that they pulled the boat for the winter, and may not have re-launched. Services North are a challenge as there are so few resources. Ticaboo Dan has done all our on lake work, and we are thrilled he continues to provide services. But some of the more complicated work, even if Ticaboo/OffShore could pull the boat they don't seem to have the skill set. (I will caveat that and say, the last time they told me they didn't provide the services we needed was 2016). Even with that, I will stay north, less traffic.