Thank you for good comments. I think the market price of rented steam power will be higher than the rewards that can be generated by those short-term abuses because of the quality score mechanism. It will work similar to Google Adwords that screen poor performers automatically. You can bid high price to get more exposure, but if your ads on Google (your votes on Steemit) is not relevant, your costs gets higher and higher. Normally if you starts a new campaign with a new account, it is very difficult to break even unless you have very strong accumulated knowledges and speciality on the area or the field.