[q2]

As long as this industry exposure is low, bubble bursts may not impact main stream economy but if the exposure is more, then as previous financial crisis shows,---due to inter linkages in finance sector and due to wrong judgments of even supposedly sophisticated investors,--- main stream economy cannot live insulated life.

So as of now, risk may be limited to investors in question only but if the scope and invested money increases, then it can create fresh financial crisis worldwide.