So she’s a marketing genius for selling $2300 of rewards for $450? (100k points at around $0.02 per point [0] plus $300 of travel credit) Also, you had to go on a “listening tour” to discover that wealthy young professionals enjoy traveling and eating at restaurants? [0]: https://thepointsguy.com/2015/03/redeeming-chase-ultimate-re...
They've done the math.
They know how quickly the points will be spent (slowly). They probably have a deal that when you buy something with points, they don't have to pay the company itself for say 6 months, or maybe they get a discount on the service like 15% off. They could even decrease the value of points over time.
They also know that you'll renew, and they won't have to give you $2000 worth of points again. They know the probability of renewal for each customer, each year. Each time you do, the deal gets sweeter for them.
That's how someone can "give you $2300 for $450" and still make money.