I suggest you learn why Ayn Rand is nothing but a bunch of selfish preposterous nonsense. - Please. Do you say the same thing about Nietzsche? She says many interesting things on metaphysics and epistemology. Maybe you should read them. Atlas Shrugged and The Fountainhead are novels attempting to bring ideas to the general public. She wrote other works.
I do not think that Marxism is a good idea. I think it's foolishness to think that a bureaucracy will do anything but look after itself - and it will use police powers to enforce its decisions. And yet there are many socialists / communists / Marxists out there (yes I understand the differences, I too have read underdevelopment theory) who think that there can be a future where basic needs are met (good food, housing, healthcare, things to do and safe neighborhoods) without having to work for a living. (See the UBI movement as an example.)
The concern that there will not be enough jobs for all is not unreasonable. In less that 40 years these jobs will be gone - taxi drivers, truck drivers, stock-shelf refillers (Home Depot, Target, Walmart, A&P, Walgreens, CVS), warehouse people, most middle-management jobs (including gov't), basic financial services (banks and brokerages) and more.
Restaurants will hire cooks and waiters will only be there for customer interaction. They will not be needed to order food, to bus the tables, etc... So fast food places will have 1 or 2 people per shift as opposed to 10.
This is our future.