Claiming to know what Bitcoin is used for and what it is not used for. We don't need no government to decide how many people need to use bitcoin. If you love to be a central planner, you might want to look for a job in governmental administration.
Fun fact, nobody is controlling this even now. The demand for bitcoin use hasn't to this day surpassed the limit of transactions that can be processed by bitcoin's network (aside of stress tests of course). But the sad truth is that bitcoin can't scale. No matter how bigger the network gets, this limit to transactions will always be there, for a robust, scalable technologies to be based on bitcoin though, the network's size would need to remain stable in order for them to be able to count on it. Increasing the block size destroys the potential for such technologies to be based on bitcoin as it's guaranteed to decrease the numbers of participants in the network and centralize transaction processing. This kind of centralization brings interest away from bitcoin.