You know, although I haven't made the jump to CMO (yet!) my experience of CMANO runs thus:
Few years back, bought Northern Inferno, mainly to see if CMANO was for me, but at a much reduced price (standalone dlc).
Gave NI a whirl, then felt happier with justifying to myself the shelling out for full CMANO (which I STILL got less 50% during the annual festive sale )
Downloaded the (huge) community scenario pack, adding probably 000's hours of (free) additional gameplay to an already enormous experience (BIG thanks to the dedicated community).
So all told, have spent approx. £50 on a 'game' (I use the word loosely - 'incredibly deep, complex simulator' would be more accurate) which has amazed/ challenged/ frustrated/ intrigued me for nigh-on 5 years now, and probably will for another 5 (Covid allowing, and pending the next festive sale... go on Matrix, tempt me again )
And all the while, CMANO was updated/ improved with startling regularity by the devs who, having reached the point of stretching the old game as far as it would go, invested their expertise in giving us CMO.
Meanwhile, my son, for the last 5 years, has bought the annual update of FIFA for his Play-box-500, or whatever it's called, for roughly the same price as CMANO, but X 5 years = total circa £250. As far as I can tell, each version is all but identical (save the odd new players 'added' here and there) and with each 'upgrade', the previous year's 50 quid's worth is rendered instantly obsolete. If one bears EA's business model in mind, it strikes me that CMANO has offered incredible value for money over the years.
Just my tuppence worth...