it does seem odd that they havent created a machine that incorporates both technologies, perhaps it’s too expensive to manufacture and therefore too expensive to sell, or because it’s just not possible.
But when it comes to milk based drinks, I’m going down the extraction route (slayer espresso). you can still produce extremely high quality milk on a La Marzocco or a VA or a Simonelli, I think it’s better to have a coffee that is a 9/10 paired with 8/10 milk, rather than milk that’s 9/10 paired with 8/10 espresso.
I believe it’s always about having an amazing espresso to work with, rather than amazing milk, of course there’s asterisks involved with this, such as the quality of milk in terms of who provides it, milk from companies such as Estate will be leaps and bounds better than a supermarket brand. I think it should be Great espresso accompanied by good milk, rather than great milk-good espresso (I know I practically said this in the previous paragraph)