Todd can indeed buy players at expensive prices but sometimes the players are not as expected. Moreover, Chelsea doesn't need to buy expensive players but quality and productivity are highly sought after. It doesn't need to be expensive as long as the player is productive enough that is good enough, but I'm sure in the end if Maresca If it fails, of course the fate will be the same as Pochettino's because Chelsea can't wait and go through the process. What they want is for Chelsea to achieve the target, I don't know the vision and mission of Chelsea and Maresca, what agreement they are targeting, whether winning the EPL or other competitions. but the adaptation of the players and Maresca seems to be affecting the start of the new season.
Players sometimes isn't really about the money, they revolved around luck too. The best time to sign a player is when they have not been recognized, just small fame and performance within the club is okay for the sighing, this is what I see big clubs like Manchester City, Real Madrid and Bayern Munich do most of the time and then after they make use of the player and build hype around him, the likes of Haaland, Jude Bellingham are real example of fame after getting to big club, this is what Chelsea need to do.
There are some clubs that are uniquely based on building players, they go to other small divisions and but players at cheaper rate, build them with a small hype and then sell at average price to bigger clubs, Chelsea can reach out to those clubs and make good deals for the development of the club, there is no point in wasting money buying expensive players that wouldn't add anything meaningful to the club.