@iamnotback

No one is making those speculators buy and hold all that liquid steem. They do it because they can speculate and are speculating. Either they believe there will be a price rise sufficient to justify the dilution they are incurring, or they are foolish and don't understand it. Either way, you are not being diluted (which is an actual word with an actual meaning: that your share of ownership of the platform is reduced) by inflation. Your investment may lose value because the platform as a whole does (dumb idea, poorly executed, etc.) but in that case, the liquid steem holders who are speculating by holding it will lose even more.

Also, it is very possible to sell your account at a discount. Posts are made to this effect on the Steemit thread semi-regularly. Many have done so. If you choose not to do so you are speculating on a smaller price decline than you would take by selling it (including the possibility of an increase of course), or you see value in the account name (which indicates and adds to platform value).