AFAICT they're not, and I think that's the point of GP's criticism. If it were FOSS you would have the option of figuring out the hosting and migration story yo

AFAICT they're not, and I think that's the point of GP's criticism. If it were FOSS you would have the option of figuring out the hosting and migration story yourself if the company goes under. Without that you have to rely on them surviving if you want to use their platform long term.