I think it's a tough sell to get M2 to existing M1 clients.
My proposal would to rebrand M1 to MLite. That's basically what it is, a Lite version of M2 these days, which needs less resources to run than a M2 installation.
Otherwise I suspect there will be a large bubble pop and that will be it.
About 3 years ago I wrote what you've pasted in
It wasn't well received lol