I understand. It becomes difficult. Most people wish to reply but it may not be manageable. Some may even afford to ignore but they don't know that the community also starts ignoring them.
I personally think a comment is a great deposit and it should get some return. A reply and even an upvote of some value.
Thank you for replying! You are right about those whom choose to not reply, losing followers that they worked hard from the beginning to get. I always feel a personal approach is always the best idea. Too many people/business lack that now days. Again, thank you and glad to see you aren’t one of them :D