So it can also mean to discourage PR from coming to Canada?
I haven't seen the published regs and so I don't know; I don't think anyone does yet.
I could speculate and state my personal preferences (as a family of five, ouch), but that won't help anyone.
But the 'can we bring our own food' discussion is missing the point; even if they did let you bring your own instanoodles, it would still be costly. It's clear from the announcement that the real expense is the staffing and special quarantine measures, etc. (Sounds to me like they will take over entire hotel complexes for this, and shut them off for everything else)
I'd also note: keep in mind this is
not permanent, and certainly will change/be adjusted as previous measures have. Right now this is a special measure for another peak in covid cases. When and how it will change, I don't know and suspect no-one does - will depend on much else.