this means money is nearly free to borrow. so many companies have borrowed large sums to expand growth and even buy back their own shares.
meaning many companies have taken on large cheap debt, interest payments on which have a small impact on their bottom line earnings.
when the fed raises the interest the monthly cost of that debt will rise which will directly impact corp earnings.
therein lies the precarious timebomb. and, imo, a large part of why the fed has been so dovish about raising the rate. and why wall street bristles so vehemently at every suggestion of a rate rise.