I think the problem is, fashion. Clearly.
Young whipper snappers like my son, have adopted being ridiculously skinny as the fashion. Hence, jeans becaome fashioned for ridiculously skinny people. Sadly middle aged people aren’t built that way. Some people are fat biffers, other older people (like me), are dead butch, have narrow waists and dirty great muscley arses and legs. Lets get this straight, we have MUSCLES!!!, NOT FAT! Legs and arses.
So the industry builds stupid jeans that look stupid on everyone, especially the people who make up the majority of the population, us. Which make sthe fashion industry ****, like the marketing and diet and sock industries.