There are many reasons why prices go up, but what it comes down to is simply supply and demand. Clients overall, typically want to pay the least amount as possible when they see a provider, while providers overall want to charge as much as possible when they choose to see a client. Generally that's how I see it and the constant push and pull between these two parties is what dictates the market. Yes it's a bit more complex than that when you look at the market more closely like the segments of the markets (Asian Micros, vs 'premium/high end') that both parties engage in. Directly, only clients and provider's engaging in their relative segments of the market have a stronger impact on the dynamics of how it operates: indirectly though, you could make the argument that different segments of the market can influence each other.
As a client, I do accept responsibility for my impact on the pricing of the segment of the market I participate in, but I don't think it would be entirely fair to get the finger pointed at me since I'm just one out of the many clients who also participate in that segment. I think Mebad23 brings up a good point to not try to antagonize fellow clients for their impacts on rates: people will inherently do what is within their best interest at the end of the day. At the end of the day, we all make our own choices. If I'm priced out of the asian micro, for example, I can make choices to either make more income, find other cheaper substitutes/alternatives, go less often, or leave the hobby entirely: it's much easier to make your own choices than try and the entire 'client' base to behave the way they want it to.