These are absolutely hands down life changing medications for many many many of us. But let’s be absolutely real here - if you stop taking them, without applying a full diet and lifestyle change and keeping it up, you will gain the weight back.
Most people who have a lot to lose and this is their hope of ever achieving this, are really using these as a tool - to change their habits. To learn about nutrition, portion control, to create healthy new habits around food, calories, movement.
These medications are not magic, but they certainly make it a lot easier to implement and then stick to the healthy changes implemented.
The hope would be that you would go into it with the mindset of “tool” vs “diet”, be realistic about goals, calorie deficit, exercise, and will lose steadily over a period of time. And in the meantime form some nee habits and develop some new tools that would support maintenance in the long run.
The folks in the US are way ahead of us on this, but from a lot of forums and reddits I’ve read - those committed to their new lifestyle, have kept the weight off. Some even continue losing as they wean off and go into maintenance.
Obviously for people with metabolic conditions, or other such issues, a super low maintenance dose may be the way forward long-term, and I truly believe this is probably on the horizon given the success these meds have bad so far.