Have you run into any problems improving or training your algorithm if you're limiting the data it has access to? What are some of the things you've done that m

Have you run into any problems improving or training your algorithm if you're limiting the data it has access to? What are some of the things you've done that make you "wish" you could be an online off-device tool? I ask because most of what we hear is that online tools will get better over time because you are sharing your data. How do you work around this, or is that even an obstacle?