Objection! Assumes facts not in evidence:
That the industrious civ discovered the tech in time to build the wonder.
That the industrious civ has the resource that speeds construction.
That the philosophical civ doesn't have a great engineer ready.
That there's no army massing on the borders of the industrious civ (or worse, inside them!), which has invested so many hammers on wonders.
That the philosophical civ wants the wonder.
Seriously, sometimes I'd rather have an academy or a shrine than a wonder. And if a philosophical civ really does want wonders, they can focus on chop rushing the Pyramids, or discovering metal casting early, and get quite a few great engineers. Then they can spend their hammers on building an army.
The Hanging Gardens, for example, costs 120 hammers for an industrious civ with stone, plus 100 hammers for an aqueduct and worker turns to build a quarry and connect the stone. 220 hammers is a barracks and 4 swordsmen - probably enough to take the Hanging Gardens. Especially if the philosophical civ was smart and grabbed theology with a great prophet, and is now theocratic. How will your industrious builders hold off 4 city raider II swordsmen?