In practice, this complexity means you at least have a chance. Most phones and almost all low-power devices will accept power from most chargers and cables. Probably not at a maximum level, but if you're stuck somewhere you can get by.

Power-hungry laptops are trickier, but even so... I've gone a week or more trickle charging a laptop from whatever travel charger I happened to have on hand, using it for a few hours, then putting it in standby and charging it up again until finally the mfg-blessed replacement fast charger arrived. The alternative (and one I was faced with more than once in the bad old days) was "no laptop".

Worst experience I've had to date has been a Norco jump box that will charge via one high-power charger and one cable, a car charger it came with, and ... Via careful back feeding from a benchtop power supply.