"the internet" is often cited as the reason for the demise of the hobby shop in the US.
Internet made price discovery so much easier and that killed those businesses that offered no real value-add.
The other factor is globalization. Manufacturing advances, low cost manufacturing overseas, and efficient transportation lowered the prices to a point where hobbying makes no economic sense.
One of the studies I have seen cited a negative inflation rate for lower-income folks since the 1990s, thanks to globalization.
But that gravy train is going to come to a stop very soon: the economic paradigm over the last 50 years is effectively other countries holding onto US dollars, by selling goods into the US inexpensively. That was / is necessary due to the power of the US and thus USD.
Once the superpower status of the US is challenged, you will likely see a sell-off of USD and the prices of imported goods will go through the roof. That's why the US is so heavily invested in its military.
It also speaks volume about the long-term damage of deficit spending and taxation: the fundamental issue with the US economy is its lack of competitiveness, caused by high taxation and regulation.
Unfortunately, communicating such a message to the voters is a political suicide so neither Clinton nor Trump is doing anything about it. Clinton will continue to push for TPP (in spite of her being against it after her being for it), and Trump is only blaming globalization for the demise of blue collar jobs.
Capitalism is in big trouble in western countries. It could have done so much more for citizens everywhere, just look at Europe in the 1800s, the US in the 1800s - mid 1900s, the tigers in the 1960 - 1990s, and China since the 1990s.
Mao was absolutely right when he said that "things evolve to their opposite". Spot on.