Don't worry, I didn't see it as one.
The main reason people don't offer what people on this thread seem to want is because it doesn't make financial sense to do so, and also, most people aren't that interested.
As an example, a PP said they never wanted their dog unattended in a vehicle - so their dog could never come on any kind of group walk as I need to be able to leave dogs locked in the car to collect others, and I couldn't always guarantee to pick their dog up last/drop off first.
I have around 30 regular dogs on my books, who come out anywhere between 5 days a week and one day a month, and in almost six years, nobody has asked to see my vehicle, proof of First Aid or any of my qualifications. One person has asked to see my insurance when I started, but I've changed companies since and they never asked to see proof of that.
Solo walks simply don't make money, and ultimately, as much as I love my job, I do have bills to pay. I do small groups (2-3 dogs max), plus a couple of half hour solo walks, and walk about 12 dogs a day on average. I could do more, but long-term, it's exhausting to be out in all weathers, every single day and I don't want to burn out - physically or mentally.