Yep, a lot. From Switzerland to Netherland, their is a lot of plain, that made train connections easier. It took some times; those connections where not that common because of borders.

Their is lot of short connections in those area. Furthermore, each year some big connections are improved. For exemple Paris -> Bruxelles has been reduced to 1h22 recently (270 km), which impact something like Paris -> Amsterdam (4h, 420 km).

Here we use short connections each week to go shopping, make some sports, or stuff like that. A friend took it every day to work. We use big connections to visit some places on week end, for Alpinism in Switzerland for example, or big cities (Bruxelles, Paris, Berlin, Amsterdam, Copenhaguen, …)

For those long connections, the main issue is the cost; some times to times their is cheap tickets, but their usually cost hundreds euros.