Building materials are judge based on the standard of "survives for at least three decades without crushing those inside" not "survives the next reorg or pivot.

Building materials are judge based on the standard of "survives for at least three decades without crushing those inside" not "survives the next reorg or pivot." What would be the equivalent of inferior building materials failing over 25 year timescales in software? C isn't even twice that age and the oldest running mainframe software is probably only a little older whereas we've had millenia of experience constructing buildings.