There is production, consumption, production, and consumption only. — Hillary
Paraphrasing the ur-leftist himself, "the conditions of production determine the conditions of society".
The upheavals in changing production, say from the beginning of the Industrial Revolution to the present, have driven upheavals in the culture. The 19th - 21st centuries contain the story of almost continual change in culture, technology, working conditions, trade, and, well, everything.
There are historical reasons why you can say, "There is no left left." One reason (at least in the United States) is that socialist organizations, socialist publications, and socialist organizing have all been subject to corporate and government suppression since the end of WWI - 1918. The "Red Scare" of 1919 involved brutal action against leftist activists. Anyone identified as an effective "change agent" might get a beating, a lynching or a bullet for their trouble. For a good time, investigate what the FBI
"COINTELPRO" operation (1956-1971) was all about,
Unionization peaked in 1954 at 35% of workers. Workers didn't abandon unions -- the unions were murdered (so to speak). Beginning in the 1950s on up to the present, organizing unions and holding on to unionized work places has become very difficult owing to laws which favor anti-union activity by companies. It pays for a large company to spend 20 or 30 million dollars to a union busting consulting group, rather than accept unionization.
In all the diversity in personality, individual markers, different cloth styles, musical tastes, etc. there is greater global monotony then ever seen before. The world turns into a grey, amorphous, uniform ball of sameness. — Hillary
I do not see the world as a gray ball of monotony.
For example, people have been saying for decades that media were homogenizing the culture, particularly the way Americans talk; we will all sound like television programs. In fact, the distinctiveness of regional accents had intensified, as opposed to becoming homogenized. No thanks to the media for this. Language changes, media or not.
Culture also changes continually, media or not. There are enduring and distinctive differences in the several major American cultural regions, even as changes occur.
You will see some dramatic cultural changes in less-developed countries once cell phones and the internet become available. East Africans, for example, developed banking by text messages as soon as they got cell service--way before I started banking by phone.
People are "all alike" more than they we are "all different". Greater contact between people will mean more borrowing in both directions. The result is a more complex pattern rather than a movement towards gray-scale.
Look, Hillary, there are enough things to lament without inventing more of them.