It isn't. I linked a corded one. It's much more useful than the battery carp that pro decorators use.
The only battery powered tools that I own are drills.
I have 6 different types of Festool sander, all of which are mains powered. I don't see the point in battery powered sanders given that they are only ever used when connected to my dust extractors. My dust extractors have 5m power cables, the tools' power cables and extraction hoses are 3.5m. How long is the flex on your Clarke? 1.5m?
I once made the mistake of buying a TacWise Duo staple/pin gun to lay 6mm ply on a customer's kitchen floor. The fact that I had to use an extension lead to reach the floor from the worktop power points really irked me. The next time I need to do a similar job, I will purchase a battery powered version.
For light duty DIY use, I find clarke to be OK
I accept that I may well be unfairly maligning Clarke. You say that they are fine for light DIY use. They say that they are suitable for professional use. These days, most people expect "professional" tools to be able to be run for hours continuously. DIY tools often need breaks in use for the motor to cool down.
I have never stopped anyone contributing. But you seem to want to stop mine by keep asking why I am here on this site. I am here because I am, it's that simple. I usually have a giggle on things that are obviously wrong, such as caulk that doesn't crack.
I have no desire to stop you posting. I was simply trying to explain the way this website generates income for the site owners. This site is not subscription based. I assume that the servers and staff are funded via advertising. The site has 1.2m visitors per month. Part of the success of the site is down to the fact that there are a number of competent professionals that are happy to spend their free time trying to help people that ask questions. Those answers are then seen by other people using search engines to find answers to their own specific queries.
Visitors seeing your constant harping about tradesmen as being corrupt, may well be less likely to visit the site again, and accordingly, revenue will fall. I contribute here because this site helped me when I previously needed advice. I see it as being a quid pro quo scenario. Regardless of your opinion of me, I am extremely knowledgeable with regards to the products that I use in my main sphere of work. I am equally willing to accept that every day is a "school day". My knowledge is not absolute, I am painfully aware of that. I am not convinced that you understand the limitations of your ken though.