Technical debt is risk. Just like in financial systems, taking on SOME risk is how you make money, but you need to measure it and minimize it and be prepared for if the risks taken all end unfavorably. This product risk (see also dependency risk) is intertwined with the combined risk of other projects going on, whether they're public relations risk, technical risk, staff risk, etc. and taking on too much risk means you have too many flipped coins in the air to count on them all landing favorably for you, even if they're weighted.