Of course PSG has good financial clout to make signing a player seem easy. But everything is not as easy as we think, that's because PSG is also overshadowed by the FFP rules that apply to all teams in Europe. They certainly have money, but if their income and expenses are not in balance then surely something else will work against them. Harry Kane and Dusan Vlahovic are certainly good for PSG uniforms, but PSG are unlikely to be able to sign both of them in one season.
PSG's main focus right now is the future of Kylian Mbappe, not just their new striker. Luis Enrique has a plan in building his squad, so PSG's transfer policy will also benefit from it. I tend to think Enrique will focus on improving the quality of midfielders and defenders rather than forwards, that is an important part of his game plan next season.
PSG still can't convince mbappe to sign a new contract so psg really need to make a better signing for their front line should psg make the decision to sell mbappe if they don't want to lose him for nothing next season. But seeing PSG opportunities for Harry Kane, it seems that it is very unlikely to be able to bring him in because Harry Kane has been in good communication with Bayern Munich lately.
These two giant teams have indeed been more active in this season's transfer window because PSG under Luis Enrique tutelage want to reassemble a more efficient squad by bringing in a number of new players. Something similar happened with Bayern munich where they wanted to overhaul a bigger squad as tuchel wanted. The front line is Bayern Munich big focus for this transfer window.