The Schitt's Creek series finale revealed that Twyla had the means all along to buy the town and help the Rose family, but chose not to. It turned out that the upbeat Café Tropical waitress had won $46 million in the lottery prior to the time in which the show took place. What's significant was how she continued working at the cafe and living in the lacklustre town as if her life hadn't changed. This left audiences wondering why, after six seasons, Twyla sat on her prize money and seemingly did nothing to help.
When the Rose family moved to Schitt's Creek after losing their fortune, Johnny initially tried to sell the town as a way of regaining some semblance of their wealth. Since the town wasn't considered a hot commodity, the selling price was under a million dollars, which would have been feasible for Twyla. Even when, later on in the series, the town did have a potential buyer and Moira pushed to increase the price to an even million, Twyla still would have been able to make the purchase. At the very least, with $46 million, there are many ways she could have financially helped the Rose family.
However, Twyla understood the superficiality and, more importantly, negative influence of money. Being the emotionally intelligent and grounded person that she was throughout the show, she would have seen, from the Rose family's initial selfishness and self-righteousness, that relocating to Schitt's Creek was actually a blessing in disguise. Furthermore, Twyla was often a source of support and empathy, particularly for Alexis, so it wasn't like she was entirely against helping them. For her, buying the town would have been an easy solution, but, as she saw with her mother, it wouldn't have bought the Rose family actual happiness or personal growth.
Indeed, when Twyla confided in Alexis about her lottery prize money, Alexis proclaimed that she was able to do anything and go anywhere she wanted, suggesting that Twyla's newfound wealth meant Schitt's Creek and Café Tropical were now beneath her. However, it's clear from the fact that Twyla kept her waitressing job that she valued honest work and company over money. This was a lesson that both David and Alexis learned. Even though they both had jobs before Schitt's Creek started, the biggest difference was how resourceful and self-reliant they had to become in order to find success and fulfillment in their new careers. Essentially, they had to build themselves back up after being abandoned by their friends and losing their wealthy connections. If Twyla had swooped in and, for instance, given David money to open his store or paid for Alexis' college education, their successes wouldn't have been rightfully earned, and they wouldn't have learned about commitment and work ethic.
Above all, Twyla didn't want to be treated differently for being wealthy. With the Rose family, especially considering how their respective reversals of wealth happened around the same time, Twyla knew she would have been seen only as a potential buyer of the town or a business partner – someone, in short, they could use, profit from, and discard. However, as one of the best LGBTQ+ shows on Netflix, Schitt's Creek is about finding wealth and happiness in personal relationships. Money would have precluded the Rose family from getting to know her as the weird and sweetly optimistic waitress that she was. That Twyla eventually felt secure in her relationship with Alexis to tell her about her lottery prize money – and offer to help her move to New York – is a testament to how they grew to see, respect, and love each other as the young, working, and empowered women they really were. It's what Twyla wanted; it's what they both deserved.