At the same time, this is absolutely a ship of Theseus situation. TT has existed since at least the 90s, and grew with the industry. They were responsible for lots of good games, lots of ports, lots of Movie/toy tie-ins, and lots of bad games, like specifically Sonic R. They grew with the industry as a whole into the 6th generation (Gamecube, Xbox, PS2), after struggling significantly in the previous console generation, seemingly a victim of Sega's abysmal console "strategy" at the time.

In the 6th generation, they basically made shovelware, right up until Lego and LucasArts gave them a chance to make this radically new and very LEGO game that also happened to be star wars. Lego was dealing with their own stagnation and "what do we do now" view on Lego games, after having hits like Lego Racers and Lego Island in the late 90s. The original Lego Star wars was great because it was extremely casual, very simple, and had an entirely new "Feel". Everything was made of Legos, everything was interact-able in a very Lego way etc. The characters in Lego Star wars didn't say anything, they "acted out" the story of star wars with a lighthearted feel and a pronounced "charm". That's why the original games were so good. But then everyone saw dollar signs and Disney just threw every property they owned at them. Eventually it got played out.

They've tried to reimagine the formula a couple different times but it hasn't worked very well. This announcement is basically "We completely used up the TT lego game formula and need to innovate somehow".

So, there have been AT LEAST three eras of Lego video games, and at least 2 eras of TT Lego video games. Buying TT now would not give you the people and ideas that created the initial, very innovative formula, and you would not be able to recreate the "Well we aren't making any money with these properties now" situation that allowed TT to even be given the rights to all sorts of different IPs.