Think long and hard on this. Most people that get into chickens do not stay with it. This site I think would be ideal for making an assessment of that hypothesis. To give an example with what goes on in my immediate vicinity. There has been over a dozen startups over the last 10 years. Only two have kept chickens continuously and only one has done so without purchasing hatchery stock. Only three currently have chickens and two of those started up in the last two years. The others either lost chickens to predation, disease or selling them off when interest lost in keeping the chickens. To my knowledge, none of the birds sold off persisted for more than a couple more years or left offspring to perpetuate their line. The secondary owners did value the purchased birds as much, only as second rate egg producers.
If you are regularly buying new chicks, then the chickens are effectively a consumable product like food or toilet paper.
The COVID issue clearly promoted an increase in chickens. We shall see how long the new chicken keepers stay in the game. Locally, there does appear to be an increase in demand for feed and other supplies used for keeping chickens. I home the interest is sustained.