They’ll fire you the instant money dries up, or hold back raises and bonuses when their poor financial planning creates an economic squeeze. Staying loyal means getting set up for stagnation and then led to the slaughter. Every sacrifice you make for a company will be forgotten when they have to make a hard decision and send you packing.
Accordingly, keep your eyes peeled and look for better offers when they are struggling.
Giving two weeks notice is also suspect. You should stay open to the possibility of burning bridges if you need to move quickly.
Don’t get hitched to losers going nowhere.