These large players, players whom undoubtedly have a fairly robust IT unit - or at least outsource that need - won't use server-side redirects?
You are aware that these entities are already using redirects and rewrites to change dynamic URLs to static and search engine friendly URLs?
They're ALREADY doing it; in fact it is a extremely important element of SEO. But they won't do it with their mobile campaigns because ... because they want to pad NEOM's corporate coffers? Because large businesses enjoy unnecessary expenses? You're funny!
You said "Link Manager" will take out the guess work? What guess work?
All requests for oldpage.html will seamlessly resolve to newpage.html, and your mobile campaign has just "dynamically" changed without the need to pay NEOM a licensing fee.