Bottom line for them, yes. Does not have to be a limitation for all of us.
Not for me. Availability of right-size speakers is what drove me back to designing and building my own custom weighty-built speakers again. Another option is buying from local-state manufacturers or to source good used deals. A 2-3 day drive trip across a few states to go pick up some nice large new or 2nd hand speakers can be an option too. Heck, go rent a van if you have to in order to get what you want. There are other doors when dealing with larger speakers that don’t have to fit on a pallet.
There may be more than a few here on A’gon who’ve made some drive trips to go get their big speakers? :)