The quality of wine with screw-caps

We see a very high sales rate for wine with screw caps. Now more than 17.5 percent of all wine sold last year was wine with screw caps.

Well I have tasted a lot of these wines, some are good, others bad, very bad, but one thing they all have in common, they are not wines made to store in a cellar and will not get better with age.
I think they even have a date for last use (all of them).
But one very good thing about them is, they wine is a bit cheaper, but I think fine wine is losing a lot of esthetic value,

And speaking of wine with screw caps, what about all the wines on cardboard boxes, talk about losing esthetic value, if this will be the future of all wines just to produce it cheaper, then I may lose some interest in fine wines.

Buying Guide to Wines of North America: More Than 3000 Wines Reviewed by the Beverage Testing Institute

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The basics of wine making

First of the grapes are crushed to release its natural sugar. When time goes by, the juice will produce naturally ferments. With some help from sugar, the ferments and sugar will then produce alcohol and carbon dioxide.
The fermented wine is then filtered from the grapes solids, then the wine is put in some brewing vat, where it is clarified, stabilized, then at last it is bottled.
Okay this was very off, from what we can do at home in the kitchen, but I am actually trying to find some good information about how to make your own wine at home without any big brewing vat, and special equipment to clarify the wine.