As someone who invests in Index Funds this does worry me. Surely we can't all invest in Index Funds and still have everything work? I don't think it's an issu

As someone who invests in Index Funds this does worry me. Surely we can't all invest in Index Funds and still have everything work? I don't think it's an issue for now, but something to keep an eye out for 10, 20 years into the future once many more people move into Index Funds.