I used to be a professional cake baker/decorator, running my own business. The reason I stopped was due to this kind of response.
You need to think about this a little, the costs involved are not simply ingredients.
Premises, equipment, licensing, insurance, utilities, design/planning, qualifications, training and general admin all have to be considered, before you even get down to the cost of ingredients and the time it takes to physically make a cake.
In the past, a single wedding cake has taken over 20 hours to create and make to the personal specifications of the bride.
When you hire a professional cake maker to create a bespoke cake for you, you aren’t simply paying for a bit of sponge and icing, you’re paying for an individual service, for a unique quality product.
If you want a cheap cake, go to a supermarket. They can provide cakes cheaply, simply because they are mass produced in a factory, their overheads are comparatively low and costs covered by profits.
An independent baker will never be able to compete with supermarket prices, but their products will be made to your individual requirements, with quality ingredients, with love, care and personal pride.....and they’ll still barely scrape a profit.
The decision is the buyers, always, do you want good or cheap? Bespoke or mass produced?
If you aren’t prepared to pay for a baker to make your cake, that’s absolutely fine and your prerogative, but absolutely do not go online to moan and try to undervalue someone who is providing a product and service that you yourself, do not have the skill to replicate.