u/Easy-Development6480

Just started learning about bonds and just want to make sure I'm understanding things correctly

Rolling over a bond is when a company issues a new bond to pay the principal on a bond about to mature.

Does this mean there are companies that issued a bond once for investment and then spend the next 20 years just constantly rolling over? So decades of issuing bonds that just payback a principal and not for investing in the company.

If yes why are investors happy with that? Wouldn't a company not able to payback the principal be seen as weak?